– I’m sorry. I took your pen ___ mistake.-- It doesn’t matter.
– The flowers in our school are very beautiful. --They _______every week.
--Many students don’t know how to ______ stress and become worried. -- I think they should ask their teachers for help.
There ______ great changes in our city in the last ten years.
--How is your grandma? --She is fine. She used to ______ TV at home after supper. But now she is used to ______ out for a walk.
– I often use micro-blog to communicate with others. -- You are so smart! Can you please tell me _____?