― I'm taking my driving test tomorrow. ― _______!

― I'm taking my driving test tomorrow. ― _______!
A. Cheers
B. Good luck
C. Come on
D. Congratulations
      满分：2.5  分
2.  ― I'm very sorry I can't go to your birthday party. ― _______.
A. It's very nice
B. Can I help you
C. It doesn't matter
D. Certainly
      满分：2.5  分
3.  ― I have a serious toothache, doctor. ― ________. Let me give you an examination.
A. It doesn't matter
B. That's OK
C. Take it easy
D. Don't worry
      满分：2.5  分
4.  ― What about having a drink? ― _______.
A. Good idea
B. Help yourself
C. Go ahead, please
D. Me, too
      满分：2.5  分
5.  The pressure of too much homework has led to an evident _______ among the students.
A. shortage
B. minimum
C. refusal
D. decline