In Japan, people sometimes give special gifts. But they are not open. Later, people may the same gifts to someone else.

Lin Too, open _______door, please. —I’ m coming, Mum.

There is no doubt ________ those who work hard will succeed sooner or later.

Can you tell me what you __________ when the teacher came into the classroom?

Is Handan ______ modern city or ______ ancient one?