问题描述：
18.You’d better go to a dentist and have your bad teeth ____ out.
A.pull B.to pull C.pulled
19.I remembered ____ off the light when I left,but in fact,I forgot _____ it off.
A.turning,to turn B.to turn,turning C.turning,turning
A.pull B.to pull C.pulled
19.I remembered ____ off the light when I left,but in fact,I forgot _____ it off.
A.turning,to turn B.to turn,turning C.turning,turning
问题解答：
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