Having checked the doors were closed, and ___ all the lights were off, the boy opened the door to his bedroom.

Thai is the only way we can imagine_________the overuse of water in students’ bathrooms.

Will it be a long time _______ I come for the pictures? —-No It _______ be ready by 3:00

_____do they play football —Sometimes.

__________we get onwell with a number of people，we are usually friends with only a few．