—The terrible accident is under investigation.
—Actually, quicker action _________ those workers trapped in the mine.
| A．might have saved | B．must have saved | C．should have saved | D．could have saved |
With all the novels ,he left the library.
| A. borrowed |
B. borrowing |
C. to borrow |
D. borrow |
Had I hurried, I the tram.
| A. would catch |
B. could catch |
C. would have caught |
D. had caught |
I wish I what to do.
| A. knew |
B. have known |
C. know |
D. will know |
It is important that we wild animals.
| A. will protect |
B. should protect |
C. shall protect |
D. are protecting |
I knowJohn Lennon, but notfamous one.
| A．×, a | B．a, the | C．×, the | D．the, a |