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 |
- Do you know ______ of them?
- No, I only know, Mr johnson and Mrs Smith.
| A．both | B．either | C．any | D．all |
—You were brave enough to argue with Mr. Smith. —Well, now I regret _______ that.
| A．to do | B．to be doing | C．to have done | D．having done |
Too much pressure from study leads to sleeplessness, which _______ increases the risk of forgetfulness.
| A．in turn | B．in return | C．by chance | D．by choice |
The gym is a public place, so you should be ________ and leave all the machines clean after using them.
| A．considerate | B．cautious | C．subtle | D．modest |
The ability to _____ one another for past wrongs is one of the greatest attributes that anyone should possess or exercise.
| A．explain | B．forgive | C．excuse | D．apologize |