___so as to make our city green
| A．It is necessary to plant more trees |
| B．Many trees need to be planted |
| C．Our city need more trees |
| D．We must plant more trees |
A man with a bleeding hand hurried in and asked, “Is there a hospital around ______ I can get some medicine for my wounded hand?”
| A．that | B．which | C．where | D．what |
----Hello, may I have an appointment with the headmaster?
---_____.
| A．Sorry, he is busy at the moment | B．No, you can’t |
| C．Certainly. Wait a minute, please | D．Let me see |
He is ready to help others, seldom, ______ refusing them when they turn to him.
| A．if never | B．if ever | C．if not | D．if any |
Robert is said ______ abroad, but I don’t know which country he studied in.
| A．to have studied | B．to study | C．to be studying | D．to have been studying |
I can remember very few ______ when he had to cancel his plans because of poor health.
| A．situations | B．conditions | C．occasions | D．circumstances |