-- Do you know why he left so early ?--__________ for the English test, I guess..
When you are doing reading exercises, it is a good idea to _______ the questions before you read the articles(文章).
Which sentence is likely(可能)to be spoken by Americans?
— Is your e-friend in Year ______?— No. He is in the ____ grade.
There an exciting softball match on TV this evening.
There aren’t enough chairs. Would you please _________ ones here?