Last month, American scientists started working on _____ project aimed at improving _______ ability to predict earthquake.
| A．the; a | B．a; an | C．the; an | D．a; the |
All the books donated by the students from urban schools are said ________ to the students in the earthquake-stricken areas the other day.
| A．to have been sent | B．being sent |
| C．having been sent | D．to be sent |
I will be surprised if you can get Calvin, who is a close-fisted man, ________ these donation draw tickets from you.
| A．buy | B．buying | C．to buy | D．buys |
The fog was so heavy this morning that drivers could hardly ________ the things just ten meters away from them.
| A．turn out | B．look out |
| C．let out | D．make out |
This is the most serious and worst situation ___ I have ever experienced as a fan of the NBA.
A. whichB. thatC. when D. where
--- She should have been warned of the danger before she carried out her traveling plan.
--- ______, but she wouldn’t listen to me.
| A．So had she | B．So she had |
| C．So she was | D．So was she |