21. —Would you like to travel this summer?
     —________, but if I’m admitted to a university I’ll
     have to go to the campus instead.

A. I couldn’t agree more      B. I’d like to
     C. With pleasure            D. I’ve no idea

22. —Is Jack on duty today?
     —It________ be him. It’s his turn tomorrow.

A. mustn’t       B. won’t           C. can’t          D. needn’t