单项选择题

—My baby has a heart trouble.
—Did the doctor find it difficult（）.

A. in treating
B. treating
C. for treating
D. to treat

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单项选择题
Children who are overprotected by their parents may become （）.

A. hurt    
B. damaged   
C. spoiled    
D. banned
单项选择题
Mary's design is almost identical ______ John's.
A. as

B. with
C. within
D. for
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