________ Yao Ming has retired from the NBA，the pleasure we have got by watching him play basketball at home and abroad will last long.
| A．Although | B．If | C．Since | D．Once |
This question is ______ easy, all the students can answer the question.
| A．too much | B．too many | C．much too | D．many too |
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 |