___________there are many different types of food, some animals spend their lives eating only one type

Green represents________and nature. When you feel weak, you can wear green.

He told me that he had mailed part of the samples样本 and that the rest _____ in a few days.

A horrible thought _________ him when he was waiting for Tom in the airport: what if the plane from Malaysia had been hijacked（劫持）

I’m going to write articles and   them to magazines and newspapers.