C
2. went up
3.have been
4.gave
5.Have you seen
6.took
7.have been
8.was
9.Have you done
10.Did you like
D
2.It has'n rained very much in recent years.
3.People have been doing a lot more to protect the environment recently.
4.Everyone has now realised the importance of recycling bottles and paper.
5. The climate has changed a lot since I was a child
