What did Sam say just now?–He said he ______ at that time.
The first thing _____ I should do is to work out a study plan for the next term.
Sally, could you go and help your father wash the car?—Why ____________? I’m busy now. Amy is lying on the grass doing nothing.
Mr. Wang is a popular maths teacher _____________ the students in our school.[ ]
Why was Mrs Smith angry with Jack?—Because he worked than the others.