“Why did you go to the wrong class, Mr. Wang ” “Well, I forget _______ I was supposed to go to.”

To our surprise, we got ______ people to attend the meeting as we had expected.

Have you ever been in a situation ____ you know the other person is right yet you cannot agree with him

The students in this school plant ______ trees every year.

Hello , this is Tina speaking. Is that Sam —- Sorry, he isn’t here at the moment . ________