You can’t imagine what great trouble the doctor had ______ the patient.
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A
treats
B
treating
C
to treat
D
treated
推荐题目
 You ______ things about. Look, what a mess in your room!  
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A
always throw
B
have always thrown
C
are always throwing
D
had always been throwing
Up to now, they _________ a good way to solve that problem.
#102584
A
didn’t find
B
can’t find
C
hadn’t found
D
haven’t found
— Are these seats available?— Sorry, sir. The seats _____.
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A
have reserved
B
are reserved
C
reserved
D
are reserving
Getting to the cinema, quite out of breath, we found the film     for ten minutes. 
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A
having been on
B
had begun
C
had been on
D
had been started