He has no trouble working on this problem,句子中为什么用 no,为什么用 on
He has no trouble working on this problem,句子中为什么用 no,为什么用 on
He had no difficulty working out the problem为什么是working
this medicine has had no effect on the patient为什么要加 had,has
Lucy has no problem ________(finish)____ the task on time he
He has been working here.为什么要用working?
WORKING ON MATH PROBLEM 中的 WORK为什么要加ING
problem和question有什么区别?为什么用no problem 而不用no question?
I have no money on me 为什么用on而不用with
he has no hair on his head改为同义句
No problem为什么problem不加s?
He has no time to do what he likes为什么用to do
Does he have long hair?-No,he has short hair 这里为什么用have