Sometimes proper answers are not far to seek ________ food safety problems.
The head teacher insisted that every minute ______ made full use of ______ for the mid-exam.
Hangzhou marathon is a race _______aim is to help people know the importance of taking exercise.
At the meeting, the old man ______some good advice and all the people there agreed with them.
Was it on the train “ Harmony” ______ John met with his girl friend?
---Have you finished your experiment report, Jane?---Oh, my God. I’ve _______ forgotten all about that.