:21. —The young man spent as much time as he experiments.
—No wonder, he succeeded .
A. did; by the end
B.
could do; in the end
C. could doing; in the end
D. could to do; in the end
22. the
workers insisted on was that they more pay.
A. hat; must be given
B. What; should give
C. What; be given
D. Whether; could be given
23. It was in the lab __ was taken charge of by professor
Harries they
did the experiment.
A. which; that B. that; where C. whom; that D. which;
where
24. I dont think he could have done such a rapid thing last night, ?
A. do I
B. had
he C. has
he
D.
did he
