Three students in ten will go and _____ to stay in the classroom.

We hope ___have a very happy year in our class.

eople say that Mars should be protected as a wildlife reserve where we do everything possible to avoid pollution, on the _______ that life could exist on it.

When I was a child, my father ______ read me a story at night before bedtime．

When the teacher came in , the students about the new film .