Is the tall man over there our head teacher– No, it be him. He has gone to Shanghai for a meeting.

Nuclear science should be developed to benefit the people ______ harm them

In our school library there _____ a number of books on science, and in these years the number of them _______ growing larger and larger.

eth are _____ , and my grandmother often takes them out to wash them and then put them back.

It was announced that only when the terrible disease was under control _______ to return to their homes.