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共回答了19个问题采纳率:94.7% 举报
my friends concern my health(not heath).this sentence is active voice,so the answer is B.
for cross reference:
concerned/concerning for my health,my friends expressed their concern and wishes.
because "my friends concern for my health" and "my friends is concerned for my health" are all right.
the like:worry about and be worried about.
just remember this:
whenever the subject of the first sentence is left out to combine two sentences into one,
be + past participle(of a verb) --> past participle
verb(original) --> present participle of the ve
1年前
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