21．—See the gathering clouds outside? Please take this umbrella with you．
— .
A．Thanks．Take it easy B．OK, just in case
C．Well, it just depends D．All right．I'll try my luck
22．We walked as fast as we could,____ to catch the 9:30 train．
A．to hope B．hoping C．hoped D．hope
23．Since when has ____ been any of your business what I do?
A．it B．that C．all D．this
24．Life is like a long race ____ we compete with others to go beyond ourselves．
A．which B．what C．that D．where
25．The jug ____ easily．Be careful how you handle it．
A．will be broken B．will break
C．is broken D．breaks