Now China is fighting against illegal cooking oil（地沟油）, a kind of waste oil _____can cause a lot of illness.

Why not consider _______ to Hainan for the Spring Festival?—That’s a good idea!

All the students were pleased to find the exam for they found the answers

Why didn’t she ask for help at that time?— You know, at such a midnight, there was no one ________.

I am very glad that our class_____ in taking the first place in the singing competition. —Congratulations!