1．________ an hour every day has made a considerable difference to my health.
A．Having walked
B．Walk
C．Walking
D．Walked
2．Today we have too many choices of communication through advanced technology，but we seem ________ the joy of communicating face to face.
A．losing
B．to be losing
C．to be lost
D．having lost
3．Nobody but doctors or nurses and those ________ by Dr.Li ________ to enter the patient’s room.
A．being invited；allowed；are allowed；is allowed；are allowed________ often enough.
A．explaining
B．to explain
C．explain
D．explained
5．With the couple ________in a nearby town，the house seems pretty empty most of the time.
A．work
B．to work
C．working
D．worked
6．—Why do you look sad?
—There are so many problems ________．mained to be settled
7．—Hi，Mary.Would you like to go to the concert this evening?
—Sorry，Tom.________ tomorrow’s lessons，I have no time to go out with you.
A．Not preparing
B．Not having prepared
C．Not to prepare
D．Being not prepared
8．The direct flight has proved successful since 2017，________ Taiwan another tourist destination for people on the mainland.
A．made
B．making
C．make
D．makes
9．________to get a seat for the concert，he didn’t mind standing in a queue all night.
A．Determine
B．To be determined
C．Determined
D．Being determined
10．The traffic rule says young children under the age of four and ________ less than 40 pounds must be in a child safety seat.
A．being weighed
B．to weigh
C．weighed
D．weighing
11．The pollution is getting worse and worse；we must stop pollution________a better life.________ that the famous professor had cancelled his lecture because of his serious ill.
A．being informed
B．to be informed
C．informing
D．to inform________near，students feel great pressure.
A．drawing
B．drawn
C．having drawn
D．to draw
14．—Do you have anything more________，sir?
—Yes.I need this file to be typed and printed as soon as possible.
A．typing
B．to be typed
C．typed
D．to type
15．We don’t permit ________ in the office but you are permitted ________ outside.
A．smoking；smoking；to smoke；to smoke；smoking________ English songs，but this time we had him ________a Russian song.
A．to sing；sing
B．to sing；to sing；to sing
D．sing；sing________the lecture.
—No one had told him about ________a lecture the following day.
A．to attend；there to be；there being；there be；there was________．But when I was leaving I couldn’t find her anywhere.________ in a refrigerator.
A． stored
B．to store
D．store________ your coming weekend，swimming or fishing?
A．spending
B．being spent
D．to spendThe three travelers finally reached the home of Bertha’s mother around dusk，________65 miles in less than 12 hours.
A．covering
B．having covered
C．to cover
D．to have covered
22．Our company is going on very well.________dozens of local women，we produce handmade goods with unique designs that sell well overseas.
A．To employ
B．Being employed
C．Employed
D．Employing
23．The local government has already collected three million dollars，________for the environment improvement.
A．intended
B．intending
C．to intend
D．to be intended
24．Who do the passengers on board think it is up to________a final decision about such a matter?
A．make
B．making
C．to make
D．to be making
25．________ the information the professor demanded earlier，the assistant continued to search in a sea of books for more on the topic.
A．Gathering
B．Having gathered
C．Gathered
D．Having been gathered
26．My mom held me and my brother tight，tears of happiness________her face，feeling proud of our final success.
A．to cover
B．covered
C．having covered
D．covering
27．When________to a totally different culture，we should be open－minded and try to understand and appreciate it.________what patients were going through，the doctor determined to follow them for six days.
A．Having found
B．FindingFor months，state，private，and volunteer rescue teams searched the area where the plane was believed________．I was bored staying here for years，________whether I should try some different place.
A．wondered
B．to wonder
C．wondering
D．wonder