16-year-old students in England should understandfifteen _______ words.

Why weren’t you at the meeting —I fora call from my husband in Guangdong.

But for the sudden rainstorm, our trip to Hong Kong _____ a very pleasant one.

1–Is everything __ we needto do __–Yes. You needn’tworry about it.

Mr. Duncan raised an unnecessary question __________he then failed to find an answer.