John'sscoreonthetestisthehighestintheclass;he____lastnight.
C
「句意」 约翰的考试分数全班最高;他昨天晚上一定学习了。
「难点」 表示对过去某一动作行为的猜测须要用must have done 这一句型结构。
Mary tiptoed over and took the clock away because she hated to hear it（） when she was trying to go to sleep.
Theschoolisgoingthe________miletocreatethenextgenerationofsportingstarsthankstoitsuniquedevelopmentprogram.
If you explained the situation to your solicitor, he _____ able to advise you much better than I can.
It was recommended that passengers _____ smoke during the flight.