______ give us help is welcome.

________ is the best student in our class?

_______I want to know is __________I can master English in the shortest time.

It is agreed _______ there is a river, there is a city.

_____ she is good at is that she can _____creative imagination with intelligence to create some wonders.
A That, combine ; B What ,combine ; C That , mix ; D What, mix

In my opinion, ___ matters is not one’s looks, but one’s inner thoughts.

Tell me     you want your coffee, black or white?

______ that the way people spend their holidays has changed a great deal in the past ten years.

It is widely believed among bioengineers _____ it will be possible to create life under laboratory conditions．

________ made us very pleased was ________ the China Pavillion(中国国家馆) attracted a lot of visitors.