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 |
It was several minutes ________ we realized what was happening—our dog was trapped in a newly－dug tunnel.
| A．since | B．before | C．until | D．While |
Luckily, I ________ before the deal turned bad, which saved me much money.
| A．dropped out | B．turned out |
| C．gave out | D．got out |
When you hear a fire alarm, don't rush________， you should keep calm.
| A．in surprise | B．in need |
| C．in brief | D．in alarm |
No matter where he is, he makes ________ a rule to go out for a walk before breakfast.
| A．him | B．this | C．that | D．it |
One of the characteristics that make me different from many people is my adaptability—I'm________ and comfortable in new or unusual situations.
| A．acceptable | B．respectable |
| C．reliable | D．Flexible |