I would love ___ to the party last night but I had to work extra hours to finish a report.
| A．to have gone | B．having gone | C．going | D．to go |
．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 |
．Every possible means _______to prevent the air pollution, but the sky is still not clear．
| A．are being used | B．have been used |
| C．has been used | D．had been used |