—My sister is a typist at a foreign firm.
—I know this sort of job ________ skill and speed.
| A．asks for | B．calls for |
| C．looks for | D．waits for |
He made a wonderful discovery,of great importance to science.
A which I think is
B. which I think it is
C. which I think it
D. I think which is
Come and see me whenever .
A. you are convenient
B. you will be convenient
B. you will be convenient
C. It is convenient to you
D. it will be convenient to you
---Whose advice do you think I should follow?
---
| A．You get it. |
| B．Up to you. |
| C．Anyone you like. |
| D．You speak. |
to stay with us, he wouldn’t go with you
| A．Determining |
| B．Having determined |
| C．Being determined |
| D．To determine |
Once , the rules will work.
| A．carry out |
| B．being carried out |
| C．carried out |
| D．to carry out |