Question

9. (2015 •湖北恩施) Jack be in the office now. I saw him on the street just now.

   A. needn’t   B. mustn't

   C. can't

Answer 1

9. C

9. C解析:结合本题语境可知，杰克现在“不 可能”在办公室，“我”刚才在街上看见他了。 故can't符合题意。