—Can I sit here?
—Of course. You can take any seat _____ you like.
| A．as well as | B．unless |
| C．when | D．as long as |
—Why don’t you go out to play, Rose?
—I’m afraid I can’t. I have much homework _________.
| A．do | B．does | C．doing | D．to do |
The cloth ___________ very soft and comfortable.
| A．smells | B．tastes | C．feels | D．sounds |
They were all very tired, but _______ of them took a rest.
| A．none | B．all | C．both | D．either |
I have been to Shanghai. I ____________ there last month.
| A．go | B．went | C．have gone | D．will go |
A snake bit him ___________ he went to see a doctor at once.
| A．if | B．where | C．because | D．so |