Milk will turn sour soon on hot days ______ it is stored in the refrigerator．
| A．since | B．until |
| C．because | D．unless |
Our teacher did what she could ______us with English.
| A．help | B．helped | C．helping | D．to help |
----Shall we go and ______hello to foreign teachers?
----Good idea! Let’s go.
| A．say | B．speak | C．shout | D．talk |
The film ______for ten minutes.
| A．has begun | B．has been begun | C．has been on | D．began |
Let him______a rest. I think he must be tired after the long walk.
| A．have | B．gets | C．to take | D．has |
I think this is the best way to solve the problem. Do you ______me?
| A．play with | B．hear of | C．agree with | D．get on well with |