----How soon will you send the book to me? ----It will be two days _______ you receive my book.
The company promised to pay some money for the customers __ ___ their shoddy(伪劣的)goods and ______ an apology in public.
The country’s population ______ small, and most of its population ______ in the mountainous areas.
---What a long queue!--- Yeah.We ________________ up in the past few hours for tickets back home.
Your essay _________ beautifully.Is it the one I saw you writing yesterday?
Misunderstandings resulting from lack of social communication, if not ______ properly, may lead to serious problems.