—Can I help you, Madam?
— No, thanks. I_______.
| A．have just looked around | B．just look around |
| C．just looked around | D．am just looking around |
Wind power is an ancient source of energy we may return in the near future.
| A．on which | B．by which | C．to which | D．from which |
When changing lanes, a driver should use his turning signal to let other drivers know___.
| A．whichever lane he is entering | B．which lane he is entering |
| C．whichever lane is he entering | 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 |
I can’t believe that anyone else in the school can swim as fast as you, ________?
| A．can I | B．can't they | C．can't you | D．can they |
______ for the boy to talk with his mouth full!
| A．What bad manners they are | B．How bad manners they are |
| C．What bad manners it is | D．How bad manners it is |