Mother told Jim to watch the milk until it boiled and then off the gas.A. turnB. turning

发布时间：2020-08-17 11:56:08

Mother told Jim to watch the milk until it boiled and then      off the gas.
A. turn
B. turning
C. turned
D. having turned

网友回答

(答案→)A. turn
B. turning
C. turned
D. having turned
解析：答案为A，turn off the gas与 watch the milk until it boiled并列。
【标签】谓语与非谓语动词
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