It is uncertain side effect the medicine will bring about , though about one thousand patients have taken it.
| A．that | B．whether | C．what | D．how |
Before a problem can be solved, it must be obvious ______the problem itself is.
| A．what | B．that | C．which | D．why |
Well, it’s up to you, Aunt Ellen, _____ you stay or go.
| A．whether | B．what | C．that | D．if |
is surprising to us is that Tom can speak English fluently as though he were a native speaker.
| A．What | B．That | C．Which | D．As |
________ some teenagers don’t realize is ________ difficult life can be after they get addicted to drugs.
| A．What; how | B．That; how | C．What; what a | D．That; what |
I wonder when it was __________ you came to realize __________ he said meant.
| A．that; what | B．what; that | C．what; what that | D．that; what what |
______ is known to us is that tobacco contains nicotine and other harmful products, so you should give up smoking.
| A．As | B．It | C．What | D．Which |
It was not just the size of the party last night but ________ it meant to our company________ made it unique.
| A．that; that | B．what; that | C．what; what | D．that; what |
______ disappointed us most was that the guide was always asking us to leave ____ we thought very interesting.
| A．It; where | B．What; what | C．What; where | D．It; what |
______is known to us all is that the 2008 Olympic Games will take place in Beijing.
| A．It | B．As | C．what | D．which |
The limits of a person’s intelligence, generally speaking, are fixed at birth, but ________he reaches these limits will depend on his environment.
| A．where | B．whether | C．that | D．why |
It was not just the size of the party last night but ________ it meant to our company________ made it unique.
| A．that; that | B．what; that |
| C．what; what | D．that; what |
is surprising to us is that Tom can speak English fluently as though he were a native speakdr.
| A．What | B．That | C．Which | D．As |
It is _____ he often fails in exams____ makes his parents worried about him.
| A．because；that | B．that；that |
| C．不填；that | D．what；that |
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