Bill and his mother often 后面加do,还是does?

Bill and his mother often 后面加do,还是does? Bill with his mother often 后面加do,还是does? 不可数名词后面加do还是does? many people 后面加do还是does What____Tom and his mother like? do or does what does john's mother do?Are john and his The boy often does his mother says Bill often watch TV at night.watch后面加ing还是es?为什么? He often helps his mother---(do)homework. His mother often ____（ help) him to do his homework. Does he do his homework?还是Does he his homework? Tom often helps his mother _____(do)the homework.