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
Dale is studying in________university and he wants to be________engineer.
A.a,a B.a,an C.an,a D.an,an
—________are you going to work in?—Beijing.
A.Where B.What place C.When D.How often