By nine o’clock，all the Olympic torch bearers had reached the top of Mount Qomolangma，________appeared a rare rainbow soon.
| A．of which | B．on which |
| C．from which | D．above which |
I recently paid _____ visit to my aunt, and her grandson kept _____ making fun of me.
| A．a, \ | B．the, a | C．a, a | D．the, \ |
—I’m sorry to have kept you waiting.
—____, Bill.
| A．You’re welcome | B．Go ahead |
| C．Don’t mention it | D．No problem |
Ten years ago, the population of our village was ______ that of theirs.
| A．as twice large as | B．twice as large as |
| C．twice as much as | D．as twice much as |
She has been working hard day and night, which of course, _______ her pale face.
| A．accounts for | B．stands for |
| C．goes for | D．answers for |
--- Are you satisfied with what he did?
--- No. It couldn’t have been ______.
| A．worse | B．better | C．so bad | D．the worst |