It was she that a sharp whistle, which makes possible for us to catch the thief.
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It was she that a sharp whistle, which makes possible for us to catch the thief.
A. gave off; this B. gave out; that C. gave; it D. sent out; them
试题答案
C
前半句即主句是强调句,强调she;后半句是which引导的非限制生定语从句,it为形式宾语,指代真正的宾语即动词不定式短语to catch the thief.