He hated the war so much that he decided to leave the army _____.
| A．for long | B．once in a while | C．for good | D．once upon a time |
．— I’d better__________ now．The water is boiling in the kitchen．
— Good-bye．
| A．ring off | B．ring up | C．ring in | D．ring back |
．Only by shouting at the top of his voice__________．
| A．he was able to make himself hear |
| B．he was able to make himself heard |
| C．was he able to make himself hear |
| D．was he able to make himself heard |
．—Must I give the pen to the manager ?
—No, you may give it to________you think is on duty in the office ．
| A．whomever | B．no matter who |
| C．whoever | D．who |
．Look! The dictionary, ________cover is red, is a birthday gift given by Tom．
| A．which | B．whose | C．its | D．where |
_______environmental damage is done, it takes many years for the ecosystem to recover．
| A．Even if | B．If only | C．While | D．Once |