----What are you going to do on May Day?
---- . If weather permits, I may go mountain-climbing with my friends.
| A．Don’t mention it | B．It doesn’t matter | C．Forget it | D．It depends |
He must have passed this way, _____here are his footprints.
| A．since | B．because of | C．now that | D．for |
“Why can’t you do it now?” “_____I’m too busy.”
| A．Since | B．As | C．Because | D．For |
_____it is raining, we had better take a taxi.
| A．For | B．As | C．Because of | D．When |
It was_____he was ill that he was absent yesterday.
| A．because | B．as | C．since | D．now that |
_____everybody is here, Let’s set off.
| A．Since | B．Because | C．For | D．After |