The dress fits me well, ______I don’t want to buy it because it’s too expensive.
| A．so | B．and | C．or | D．but |
when you want to talk to your teacher ,you should _ _first.
| A．called to her | B．called up her |
| C．call her up | D．called her up |
Linda's father isn't an engineer. Her mother isn't an engineer, ______ .
| A．too | B．either | C．neither | D．also |
While the boy ______ down the street, the UFO _____ .
| A．was walking; was landing |
| B．walked; landed |
| C．was walking; landed |
| D．walked; was landing |
We didn't know the good news _________he told us．
| A．after | B．or | C．because | D．until |
I didn’t know ________.
| A．when did the plane take off |
| B．when the plane took off |
| C．when the plane takes off |
| D．when does the plane take off |