— I’m terribly sorry. I’m late because ….— That’s OK. You are here and that’s what _____.

—When did the world come into        .—It is hard to say.

When you do exercises, your heart works better. It is able to______ more blood while beating more slowly.

Students are asked to _____ themselves in this boarding school and they are only allowed to go back home once a week. 

.The idea of traveling abroad really__________a lot of Chinese people. That’s why every year witnesses more people applying for passports.