单项选择题

We're trying to ring you back, Bryan, but we think we （） your number incorrectly.

A. looked up
B. took down
C. worked out
D. brought about

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单项选择题

A. Do you suggest which doctor should
B. Which doctor do you suggest that should
C. Which doctor do you suggest
D. Do you suggest which doctor that should

单项选择题

After her time in hospital, Jenny's parents are afraid she has （） in her lessons.

A. fallen behind
B. fallen down
C. fallen back
D. fallen off