— Catherine, I have cleaned the room for you.
— Thanks. You ______ it. I could manage it myself.
| A．needn’t do | B．needn’t have done |
| C．mustn’t do | D．shouldn’t have done |
I don’t know _________.
| A．what to do it | B．how to do it | C．what to do | D．to do what |
When we practice speaking English, we often end up _____ in Chinese.
| A．to speak | B．speaking | C．spoken | D．speak |
----_____do you improve your listening?
----I improve it ______ listening to tapes.
A. How; with B: What; withC: How; by D. What; by
He ______ be a history teacher.
| A．used to | B．be used to | C．use to be | D．be use to |
Most of the students near______ Arthur was sitting appeared to be taking notes．So Arthur pretended to do the same．
| A．which | B．that | C．whom | D．where |