It seems that the students devote much time and energy _____a high score in the exam.

Oneof my friends _______ moved to America. I miss her so much.

He ___ work in Hangzhou, did he?

I am shocked at the news that many pupils were killed in the terrible traffic accident.— So am I. Little the safety of the poor children. [ ]

A true friend will never ________ from you when you’re in trouble.