—What are you doing?
—____________.
A. I'm read a book
B. I'm fine
C. I'm reading a book
The boy was very tired_______ he went to bed early.
| A．so | B．because | C．when | D．before |
There are ______dictionaries in the library.We need some more.
| A．too many | B．too much | C．enough | D．not enough |
_______the lion ______the monkey yesterday?
| A．Does, hurt | B．Did, hurts | C．Do, hurt | D．Did, hurt |
Last week my uncle _______to the USA.
A.flew B.fly C.flies D.flying
______many boats on the lake.______beautiful.
| A．There is, They are |
| B．There are, It is |
| C．There are, They are |
| D．They are, There are |