Yesterday, Jack was asked to make _______ speech in ______ front of the classroom to report what he did during the National Day.
We must try our best to stop the pollution a happy life.
John’s never flown to Canada, ?
He hasn’t got a letter from his uncle .
It is _____ unlucky day today. I’ve lost _____ useful pen.
Can you help me? I have trouble _____ the story in English.