---Linda, how is your physics project _______?
---Very well. I’ll finish it tomorrow.
| A．getting up | B．getting back |
| C．getting down | D．getting on |
She ______ know the answer, but I’m not sure.
| A．maybe | B．may be | C．may | D．must |
--- Why don’t we go climbing tomorrow? --- ___________
| A．You’re great. | B．That’s right |
| C．What a good idea! | D．No, I don’t |
The little girl kept _____ the house, because she wanted to keep it _____.
| A．cleaning; clean | B．cleaning; cleaning |
| C．clean; clean | D．clean; cleaning |
___________ the three questions, which one is the most difficult to answer?
| A．As | B．In | C．Than | D．Of |
The Yellow River is __________ river in China.
| A．the longer | B．the longest | C．the second longest | D．longest |