Having checked the doors were closed,andall the lights were off,the boy opened the door to his bedroom.
Can you tell me when the plane _______ to Hong Kong this evening?
As neither of the two nations would _______, no agreement was reached that day.
It was because of your attitude to your parents _______ they felt so upset.
Every year _______ foreign visitors come to Beijing to pay a visit to the places of interest.
---- What _______ the number of the students in your school? ---- About two thousand. A number of them _______ from the same junior school.