No sooner ______ down on bed ______ the telephone rang.
This is the factory _____my father worked ten years ago.
The conference has been held to discuss the effects of tourism ______the wildlife in the area.A. in B on C. at D. with
Sorry, madam. You’d better come tomorrow because it’s _____the visiting hours.
---When do we need to pay the balance? --- ____ September 30.
The accident is reported to have occurred _____the first Sunday in February.A. at B on C. in D. to