–How old is your sister?
–She is ________girl.
| A．a eight –year–old | B．an eight years old |
| C．a eight year old | D．an eight–year–old |
I hear there will be all kinds of robots________ twenty _____ time .
A. after, years B. in, years’ C. for, year’s
I know Beijing very well since I ________ there three times.
A. have been B. went C. have gone
-- You look very worried. _______? -- My new car hurt an old woman.
A. Can I ask a favour B. How do you do C. What’s up
Tom ______ the book before he took it.
A. looked up B. looked for C. looked through
It is raining ______, I have to stay at home instead of going fishing.
A. hardly B. heavily C. strongly