— Where is David?
— I think he ____ Australia.

[     ]

A. has gone to
B. has been
C. has gone
D. has been to
—______ you ever ______ with a group?
—Yes, I have.
[     ]
A. Have; study
B. Have; studied
C. Do; study
D. Did; study
— What a nice computer! How long             you ______ it?
— Just three weeks.
[     ]
A. will; buy
B. did; buy
C. have; bought
D. have; had
Avatar《阿凡达》is an interesting film. My brother __ ____ it twice already.
[     ]
A. sees    
B. saw
C. has seen    
D. will see
—Tom, why don't you do your homework in your room?    
—I _____it already.    
[     ]
A. did                    
B. have done    
C. do                    
D. will do
So far, how many digital cameras _____ in your shop?
[     ]

A. are sold
B. will sell
C. sold
D. have been sold

It's six years since I _______ him.

[     ]

A. have known
B. will know
C. had known
D. know
Marry ________ yet. I'm waiting for her.

[     ]

A. came back
B. has come back
C. hasn't come back
D. was coming back
用所给动词的适当形式填空。
1. She's a cabin steward for Air China and she ______ (fly) all over the world.
2. My grandparents always eat Chinese food, they ______ never ______ (have) a west food.
3. How many English words ______ you ______ (learn)?
4. I______ never______ (speak) to a foreigner.
5. —______Tom______ (return) the library book? —Yes, he has.
    —When ______he______ (return) it? —Half an hour ago.
句型转换（每空一词） 。
1. They heard a message from a spacecraft. (用just改为现在完成时态形式)
    They just _______ a _______ message from a spacecraft.
2. Have you got a letter from Lucy?(改为同义句)
    Have you _______ _______Lucy?
3. To understand the problem is very difficult.(用it作为形式主语)
     _______ _______very difficult _______understand the problem.
4. I came here two days ago.(改为同义句)
    I _______ _______ here _______ two days.?
5. Her mother has been to Hong Kong several times.(就画线部分提问)
   _______ _______ _______ has her mother been to Hong Kong?
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