Scientists photographed for the first time ever _____ wild gorillas used a stick to test the depth of a pool before getting into it, according to a recent study.
| A．which | B．what | C．that | D．when |
Our school appeals to the students to _________ at least an hour every day to take exercise in order to raise learning efficiency．
| A．set aside | B．pick out |
| C．take up | D．keep back |
Some of the members demanded to know why they had been kept _________ the true facts until they reached the present critical stage．
| A．in view of | B．in honor of |
| C．in place of | D．in ignorance of |
—What do you think of the conditions here?
—Oh, wonderful! _________ a better hotel．
| A．Seldom we can find | B．Rarely do we find |
| C．Never will we find | D．Hardly can we find |
At the other end of the table are eggs weighing twice _________—6 or 7 pounds．
| A．as much as | B．as many as |
| C．as much | D．as many |
Finally, we didn’t reach an agreement．Some agreed on the point while I was one of _________ opposed to it．
| A．those who | B．those | C．who | D．that |