A great part of the information I have was ________ by looking up something and finding something else on the way.
| A．requested | B．acquired | C．exchanged | D．presented |
Why!I have nothing to do with it._______you want me to say?
| A．What it is that | B．How it is that |
| C．How is it that | D．What is it that |
You needn’t have ________ the speaker when he was speaking; there was enough time afterwards for you to ask questions.
| A．affected | B．disturbed | C．involved | D．interrupted |
It’s helpful to put students in a situation _______ they can learn how to cooperate with each other.
| A．that | B．when | C．where | D．which |
How I wish I _________ him the secret! I regret having done that now.
| A．hadn’t told | B．had told | C．would tell | D．didn’t tell |
—Who do you think will get the first prize? —Mary, of course. She ________ for the competition for months.
| A．is preparing | B．was preparing |
C．has been preparing | D．had been preparing |