—Not only the young but also the old are interested WeChat（微信）．
—They can communicate more freely．
| A．by |
| B．about |
| C．in |
| D．for |
My phone is broken．It________just now．
| A．came out |
| B．went off |
| C．took off |
| D．set off |
—Sorry，Mr Green．I________my English book at home．
—That’s OK，but don’t________next time．
| A．forgot；leave |
| B．forgot；forget |
| C．left；leave |
| D．left；forget |
Miltie________a picture when Mr．Green came in．
| A．draw |
| B．will draw |
| C．drew |
| D．was drawing |
—Always look around________you cross the street，David．
—OK．I know，Mum．
A．until
B．before
C．unless
The thieves ran away at once when the burglar alarm(防盗报警器)________．
| A．went away |
| B．went out |
| C．went off |
| D．went through |