When I met him the other day, it was the first time we ____ each other since we were at school.
| A．saw | B．hadseen | C．wereseeing | D．haveseen |
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 |
He has known the truth. Therefore, there is no ____ to keep it a secret
| A．chance | B．doubt | C．possible | D．likely |