“— Is this your notebook —Yes, it is.” 朗读这组问答句的正确声调是_______.

The reason why he didn’t attend the meeting is he stayed up late last night

The Spring Festival is our traditional festival,__________ people usually visit their friends and relatives.

Here are some books for Jane, please ______.

n problems such as energy crisis, pollution and populationexplosion_________, people are asked to share the bitterness and endure thehardship with all the whole nation of the times．