This field of scientific research remains ____.A.to be untouching B.being untouched C.to be untouched D.untouched

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This field of scientific research remains ____.A.to be untouching B.being untouched C.to be untouched D.untouched

This field of scientific research remains ____.A.to be untouching B.being untouched C.to be untouched D.untouched
This field of scientific research remains ____.
A.to be untouching B.being untouched C.to be untouched D.untouched

This field of scientific research remains ____.A.to be untouching B.being untouched C.to be untouched D.untouched
remain
vi.
保持,逗留,剩余,残存
看到了没?是个不及物动词,所以可以不接宾语,后面那个分词作形容词做补足语,表示被动
选D

D
过去分词表被动

B
remain+ing形式

d