I was caught in a traffic jam for over an hour, otherwise I ________ you waiting for such a long time.
A. will not keep B. have not kept C. had not kept D. would not have kept
– Amazing! You _____ have won the first prize in the national English speech contest!
– I’m lucky that all my efforts have finally paid off.
A. must B. may C. can D. should
A qualified doctor has to constantly update his knowledge in order to maintain his professional _____.
A. conscience B. competence C. conservation D. convenience
We all consider _____ significant that we should cancel the order immediately.
A. how B. which C. this D. it
_____, everyone present was amused by his adventure story in Africa.
A. Absurd as might it sound B. As it might sound absurd
C. As absurd it might sound D. Absurd as it might sound
