A large number of students planting trees now, the number of the students 2000.
| A．is, is | B．are, is | C．is, are | D．are, are |
I don't remember____________ the book yesterday.
| A．where I put | B．where did I put |
| C．where will I put | D．where l will put |
Flowers____________ along the road last year.
| A．plant | B．planted | C．are planted | D．were planted |
Miss Lin____________ a lot of work for the poor area since 2010.
| A．does | B．did | C．has done | D．will do |
Our teacher often asks us____________ questions in groups.
| A．discuss | B．to discuss | C．discussing | D．discussed |
Mr. Green, a famous writer, ____________ our school next week.
| A．visited | B．visits | C．was visiting | D．will visit |