Sam is a little weak in English and he has _____ what the teacher says in class.

Jack, you seem to be .—Yes. It’s 8:20 now and my train leaves in ten minutes.

Sometimes I don’t have enough time ______ with my parents.—You will if you spend more time ______ with them at home.

You don’t need to make fancy foods to impressguests—it is something simple but good _____ will do.

You won’t surf the internet before you finish your homework, ______ you?