Weather experts advise us out if PM2.5 levels are above 500.
| A．not go | B．not going |
| C．don’t go | D．not to go |
The poster says that a writer and poet ___ to give us a talk on English next week.
| A．is | B．are | C．be | D．will be |
How this kind of plant can be ____ in a special way is still unknown to us.
| A．kept away | B．kept out | C．kept alive | D．kept off |
It is in this very village , ___Mary was born 35 years ago , ___ she will build her first school ,
inspires everyone to help her .
| A．where; that ; which | B．that ; that ; that |
| C．that ; when ; which | D．where ; when ; that |
—Can I help you ?
—I want _________these nice roses for Lucy’s birthday .
| A．two dozen of | B．two dozen | C．two dozen | D．two dozens of |
---Peter was killed in a car accident!
--- I talked with him yesterday morning.
A What a pity! B.I beg your pardon. C. Sorry to hear that. D. Is that so?