单项选择题
A.by B.in C.at D.on
A. He wanted to keep the list at home. B. He didn’t know what the girl’s enemy had said. C. He wanted the girl to talk back. D. He wanted her to check if she really had these weak points.
A. arsonists set matches to leaves B. crude oil contacts inflammable objects C. tourists throw cigarette ends onto refuse dumps D. trees start burning of themselves