The traffic on the main streets has a longer green signal than________on the small ones. (2013·四川，2)
| A．one | B．this |
| C．that | D．it |
---Shall I keep an eye on your house when you are on holiday? ---________.
| A．It’s up to you | B．Of course you should |
| C．If you should like | D．I would appreciate that |
The new road is __________ of the old one.
| A．more than three times the length |
| B．three times more than the length |
| C．more than the length |
| D．more three times than the length |
Electronic devices such as iPods and headphones can do great harm to our hearing if _______ improperly.
| A．being used | B．used | C．to be used | D．having been used |
A new __________to teaching English, is being used here, and it has proven to be very helpful to the students.
| A．way | B．system | C．approach | D．method |
It was at the very beginning _______ Mr. Fox made the decision _____ we should send more fire-fighters there.
| A．when, which | B．where, that | C．that, that | D．then, so |