Question

Tom wanted to play games at home but his mother told him ______ A.not to do B.not to

Answer 1

选 B
略作宾语的不定式短语，只保留to。
e.g. ---- Are you going there?
---- I’d like to (go there).

注意：如果该宾语是be动词或完成时态，
则须在to之后加上be或have。
e.g. ---- Are you an engineer? ---- No, but I want to be.
---- He hasn’t finished the task yet. ---- Well, he ought to have

Answer 2

B 这是一个省略式的回答，一定要用to来表示动词的省略。如果选A，必须是完整的，因为do是及物动词。
例如：
Would you like to go with me?
I'd like to.
老师祝你学习进步！
望采纳，多谢！^_^

Answer 3

B.not to

do在这里必须省略。不然显得重复啰嗦。

Answer 4

A

有不明白的地方再问哟，祝你学习进步，更上一层楼！ (*^__^*)