It was hard for him to fit in a new class, in which ______ he was familiar with.
Our teacher told us the earth ________ round the sun all the time.
I'll let you know as soon as he _________.
I want to know if they _____ the spring sports meeting next month. If they ___ it, I must get ready for it.
The teacher asked me ________ I needed any help.
-- You are not going out today, are you? --_______ I want to go shopping.