Why shouldn’t I buy a new coat — I haven’t bought _____ for five years.
| A．it | B．that |
| C．one | D．which |
_____surprised me most was _____such a little boy of seven could play the violin so well.
| A．That...what | B．What...that | C．That...which | D．What...which |
Bobby ______ me your secret, but he meant no harm.
| A．shouldn’t have told | B．should tell |
| C．mustn’t have told | D．could tell |
We must do whatever we can to____________the river being polluted any more.
| A．separate | B．keep | C．prevent | D．guard |
. His success was because of ________ he had been working hard.
| A．that | B．the fact which | C．the fact that | D．the fact |
People will be encouraged to eat healthy food, ________ and to drink less beer and wine.
| A．not to smoke | B．don’t smoke | C．not smoke | D．not smoking |