He always gives me useful advice when I don’t know _____.
| A．who to talk | B．who to talk to |
| C．who will I talk to | D．who should I talk with |
Mike has much difficulty ________ Chinese so he often asks me ________ help.
| A．to understand, with | B．understanding, of |
| C．to understand, for | D．understanding, for |
As a policeman , you must yourself and your work.
| A．strict in ; with | B．be strict in; with |
| C．be strict with ; in | D．strict with ; in |
I decided not to wait any longer ______ I waited for him at the station for two hours.
| A．before | B．after | C．if | D．till |
You’d better ______ others during the night. It’s not polite.
| A．phone | B．not phone |
| C．to phone | D．not to phone |