Living in a fast-paced world, we _______ get left behind if we stop learning.
A. should B. dare C. may D. need
The traffic rule says young children under the age of four and ____ less than 40 pounds must be in a child safety seat.
A. being weighed B. to weigh
C. weighed D. weighing
________ is the influence of TV that it can make a person famous overnight．
A. So B. As C. That D. Such
—I’m terribly sorry I forgot your name just now!
—________—it happens to all of us!
A.You bet B. Think nothing of it
C. Bingo D. Certainly not
I haven't finished my composition. I ________ for two hours and a half.
A. have written it B. have been writing it
C. wrote it D. am writing it
Last month I was lucky enough to have a chance to make a trip into _____ space with my friend Li Yan ping, _____ astronomer.
A. the; an B. the; the
C. / ; the D. / ; an
