He gave us another piece of advice, ________ of great help to the research work. A．which I think is ...
2022-12-11 13:44:44 129次 2015届浙江省高一上学期期末考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
He gave us another piece of advice, ________ of great
help to the research work.
A．which I think
is B．which I think
it is
C．I think which
is D．I think it is
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