Thank you for the school show.
| A.join | B.is joining |
| C.joining | D.to join |
Everyone should play a part_____the earth.
| A.to save | B.saved |
| C.for saving | D.in saving |
Please check your paper to ________ there are no mistakes.
| A.think of | B.try out | C.find out | D.make sure |
Liu Xi's father kept on____although he was tired.
| A.to sleep | B.sleeping | C.to work | D.working |
World Cup host Brazil would like to help China________China's soccer.
| A.improve | B.send | C.question | D.discuss |
Mrs. Green promised____all she can to help us.
| A.knowing | B.to know | C.doing | D.to do |