21. ---Shall I give you a hand with this as you are so busy now?
---Thank you. ______.
A. It couldn’t be better B. Of course you can
C. If you like D. It’s up to you
22. The number of people invited ________ one hundred, but only a small number of people ______come.
A. are; have B. is ; has C. are ; has D. is ; have
