_______it comes to traffic rules, I often come across such cases ________the local drivers obviously know them but won’t follow them.
| A．If; why | B．As; which | C．Once; as | D．When; where |
–_____ 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 |
— Where is Joan?
— She a novel in her study.
| A．has read | B．reads |
| C．will read | D．is reading |