I don’t know when he______ tomorrow .When he_____ , I’ll let you know.
I found _____ very difficult to learn maths well.
--Haven’t I told you that the computer needs______? ---Sorry,I forgot_______it fixed.I’ll send it for repairs right away.
---Do you know when Dr Smith_____for dinner this evening? ----No,but I think he _____when he is free.
_____exciting the news is!
The number of chairs in the room_____ten.I’m afraid a number of chairs in the room____lost.