单选题His mother asked him&nbsp

问题补充：

单选题Hismotheraskedhim___watchTV___hefinishedhishomework.A.not to , whenB.to, untillC.to not. TillD.not to; until

答案：

D解析ask sb (not) to do sth.意思是：叫某人（不）要做某事；not…until…直到….才.