1.A car engine cannot run smoothly without motor oil. ______ our body cannot function efficiently without vitamins.
A. Fortunately B. Gradually C. Similarly D. Confidently
2.As a poet, he was _____ his time. His poems, now regarded as classics, were unpopular when he wrote them.
A. close to B. ahead of C. because of D. as for
3.It was foolish of the student to _______ his notes during the important test, and as a result, he got punished.
A. refer to B. settle down C. account for D. bring out
4.He seems to be doing nothing, but _____ he is just waiting for his chance.
A. certainly B. gradually C. frequently D. actually
5.I couldn’t ______ what the American lecturer was saying though I listened to his speech carefully.
A. take back B. take up C. take in D. take over
