His parents try to do everything for him—That’s they are mistaken

I find _____ not easy to answer this question in English.

Smiling is ________universal language and it is one of________ ways to express friendship.

When will Wuxi Metro Line 3 open— _______ next year. Only 10% ______ been built.

wer is a kind of quality, ______ is ______ ittakes to do anything well