21. The information he gave us is more important than ____ we got ourselves.
A. one    B. those    C. that    D. the one
22. You'd better fly somewhere in the west. Then you can ____ a hire car and travel around.
A. take up       B. get on    C. pick up      D. turn on
23. — Got your driving license?
— No. I _____ too busy to have enough practice, so I didn't take the driving test last week.
A. was       B. am          C. have been   D. had been