We already have ______ pencils, but we need two ______ pens.
| A．dozen of, doze | B．dozens of, dozens | C．dozens of, dozen | D．dozens of, dozen of |
When changing lanes, a driver should use his turning signal to let other drivers know.
| A．he is entering which lane | B．which lane he is entering |
| C．is he entering which lane | D．which lane is he entering |
One reason for her preference for city life is she can have easy access to places like shops and restaurants.
| A．that | B．how | C．what | D．why |
the city center, we saw a stone statue of about 10 meters in height.
| A．Approaching | B．Approached | C．To approach | D．To be approached |
you may have, you should gather your courage to face the challenge.
| A．However a serious problem | B．What a serious problem |
| C．However serious a problem | D．What serious a problem |
Lucy has a great sense of humor and always keeps her colleagueswith her stories.
| A．amused | B．amusing | C．to amuse | D．to be amused |