---Are you free these days?
----Yes, you may come ___ today _____ tomorrow.
| A．both, and | B．either, or |
| C．not only, but also | D．neither, nor |
May I have a rest? I have already finished ________the report.
| A．write | B．writing |
| C．to write | D．written |
We can't work out the physics problem. Can you tell us ________？
| A．how to do | B．what to do it |
| C．how to do it | D．what should to do |
Try to sing more English songs，and you will find it interesting ________a foreign language.
| A．learning | B．learns |
| C．learn | D．to learn |
We can make a fire ________the room warm so that we can chat for a while.
| A．to keep | B．keeping | C．keep | D．kept |
The girl ________ by the lake yesterday.
| A．saw to draw | B．was seen draw |
| C．was seen to draw | D．is seen to draw |