We hope your suggestion will contribute __________ the problem.
| A．to solving |
| B．to solve |
| C．of solving |
| D．solved |
28. Think after you read ____.
| A．which words do you need to look up | B．you need to look up which words |
| C．which words need you look up | D．which words you need to look up |
27. Great changes _______in our city in the past twenty years.
| A．have been taken place | B．have taken place |
| C．took place | D．were taken place |
26. He said he would rather not ________it right now.
| A．doing | B．to do | C．do | D．to be doing |
25. These photos reminded him of the places ________he visited last year.
| A．which | B．that | C．不填 | D．all above |
24. Is this park ________has been built to keep the milu dear?
A. which C. the one C. that D. the one that