This problem may lead to more serious ones if_______ unsolved.
| A．making | B．left | C．remained | D．keeping |
In the playground I saw a boy ___ I thought was your brother.
| A．who | B．whom | C．which | D．whose |
--- Mr Wang, I have trouble _______ the text.
---- Remember ________ it three times at least.
| A．to understand, reading | B．understanding, reading |
| C．understanding, to read | D．to understand, to read |
---- Will you answer the telephone? It ________ be your mother.
---- Sorry, I _______. I’m very busy.
| A．can, mustn’t | B．will, can’t |
| C．may, can’t | D．need, will |
My parents will go there by taxi because it is raining _______.
| A．badly | B．hardly | C．probably | D．heavily |
---- Excuse me, is the supermarket far from here?
---- No, it’s about ________.
| A．7 minutes walk | B．7 minute walk |
| C．7 minutes’ walk | D．7 minute’s walk |