It is the educational system, rather than the teachers, _______ is to blame for the students’ heavy burden nowadays.

Tom is very happy in China during this period because his Chinese ________ every day

Though it was very late, they _______their discussion.

If you ask him _____, he will be happy to help you.

Haven’t seen you for ages ! Do you stillwork in Xi’an —______ It’s four years since I workedthere