She didn’t know__________she could express her ideas clearly when she was invited to speak at the meeting.

I wouldn’t think it _________ to ask him to ________the club—he’ll only refuse.

I’m afraid I’m not ___ to help with the show, for I am fully occupied with my own project

It was wrong to cut down the old tree which dates back to 1915, _______ the reason．

It’s really youto drive so fast on such a rainy day. Slow down!