The manager, ______his factory’s products were poor in quality, decided to give his workers further training.
| A．knowing | B．known | C．to know | D．being known |
The traffic slowed down because of the heavy snow in Yushu county, presenting a new __________ to the recovery from the earthquake.
| A．suffering | B．disaster | C．challenge | D．damage |
Is it, in your opinion, possible __________ new measures will be taken to improve the terrible traffic?
| A．whether | B．what | C．when | D．that |
—__________ I hand in my report as soon as the class is over?
—No, you needn’t. Anytime this week is okay.
| A．May | B．Must | C．Shall | D．Can |
The headmaster will __________ a speech to the visiting foreign guests this afternoon.
| A．deliver | B．address | C．announce | D．declare |
To our disappointment, the trip we had been looking forward to __________ in the pouring rain.
| A．starting | B．start | C．to start | D．started |