The teacher asked me _________.
| A．why I studied English for . |
| B．what I studied English for. |
| C．what I study English for |
| D．what I studied English . |
---How many students have visited the West Lake? ---________.
| A．No one | B．Nothing |
| C．None | D．Nobody |
When I was in the USA,I had difficulty ______ English, so I often ask Paul ____ help.
| A．to understand, with | B．understanding, for |
| C．to understand, for | D．understanding, with |
The river is too wide for the swimmers _______________.
| A．to swim | B．to swim in |
| C．to swim across | D．swimming |
I don’t know ______ with this problem. It’s too hard.
| A．which to do | B．when to do |
| C．what to do | D．how to do |
The notebook ___________ be John's ．There is his name on it．
| A．must | B．might |
| C．could | D．can't |