10. By the middle of the 21st century , the vast majority of the world’s population ________ in cities rather than in the country.
| A．are living | B．will be living | C．have lived | D．will have lived |
I think you should complain, , of course, you are happy with the situation.
| A．unless | B．however | C．until | D．though |
–_____ did you work out the problem in such a short time? --With Mr. Li’s help.
| A．When | B．Where | C．How | D．Which |
—What would you like, tea or coffee?
—_____, thanks. I just prefer a glass of water.
| A．Both | B． Neither | C．Either | D．All |
—The school network will be shut down for safety reasons.
—That doesn't me at all.I'm not a net-worm, anyway.
| A．satisfy | B．surprise |
| C．worry | D．include |
Tony’s mum looks young and beautiful. It’s hard to imagine she is already in her .
| A．fifties | B．fifty |
| C．fiftieths | D．fiftieth |