It was ________ he came back from Africa that year ________ he met the girl he would like to marry.
[     ]
A. when;  then    
B. not;  until
C. not until;  that    
D. only;  when
It _______ we had stayed together for a couple of weeks _______ I found we had a lot in common.
[     ]
A. was until; when
B. was until; that
C. wasn’t until; when    
D. wasn’t until; that
— Maggie had a wonderful time at the party.
— ________,   and so did I.
[      ]
A. So she had  
B. So had she
C. So she did  
D. So did she
I don't mind her criticizing me, but______is how she does it that I object to.  
[     ]
A. it  
B. that
C. this  
D. which
— Who is making so much noise in the garden?
— ________ the children.  
[     ]
A. There are  
B. They are
C. That is  
D. It is
— I'm sorry. I shouldn't have been so rude to you.
— You ________ something not very nice to me, but that's OK.
[    ]

A. have said  
B. had said
C. were saying  
D. did say

It never occurred to humans until the mid1990s ________ some animals can be cloned.
[     ]
A . where    
B.  that  
C.  which    
D.  what
It was not until the scientist died________we appreciated  the true significance of his discoveries.
[     ]
A．after  
B．before  
C．when  
D．that
-Was it in April,1970________China succeeded________sending its first satellite into space?
-Yes，that’s right.
[     ]
A．when；in
B．that；on  
C．which；on  
D．that；in
It was after he got what he had desired            he realized it was not so important.
[      ]
A. that
B. when
C. smce
D. as
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