(2010黑龙江省鸡西市，29，1)( )Usually, we dont know how important something is ______ we lose it.
A. or B. until C. as soon as
(2010北京市，28，1)-Would you like to go to the concert with me? -Id love to, ______ Im afraid I have no time.
A. so B. or C. and D. but
(2010广西省定西市，15，1)( )She had a stomachache she ate something bad.
A. so B. because C. or D. although
(2010广西南宁28. 1)He has a lot of money ,________he isnt happy.
A.and B.but C.so D.or
(2010天津市，41，1)We wont start the meeting ______our teacher arrives.
A.though B.until C.while D.or
(2010青海省，宁夏，28，1)( ) Bob is young, _______ he knows a lot.
A. because B. so C. but D. unless
答案：BDBBBC