Compared to other mammals, humans have a relatively long life ______.
A. length
B. extension
C. expense
D. span
查看答案
At lunch hours things get busy as customers ______ for the small range of dishes.
A. rush up
B. hurry up
C. run up
D. queue up
Your course leader will be ______ to help you.
A. available
B. obtainable
C. forseeable
D. profitable
It is no good ______ remember only grammatical rules. You need to practise what you have learned.
A. trying
B. to try to
C. try to
D. trying to
No sooner had he gone to bed than he fell ______.
A. sleepy
B. slept
C. asleep
D. sleeping