Will you___________ and take this letter to the post office?
| A．do me a favor | B．make me a favor |
| C．give me a favor | D．bring me a favor |
Nowadays, most people，in order to keep fit，prefer walking to driving ____necessary.
| A．if | B．unless | C．in case | D．as if |
The expo will be held in Shanghai, _____a lot of advanced technology will be shown for the first time.
| A．where | B．which | C．when | D．from which |
We ____ last night, but we went to the concert instead.
| A．must have studied | B．might study | C．should have studied | D．would study |
_____with this challenge, he should meet it without any hesitation.
| A．Facing | B．Having faced | C．Being faced | D．Faced |
Only when we are abroad ____feel how important English is.
| A．we will | B．do we | C．will we | D．are we |