The best way to explore _______ countryside is on _______foot.
——Why on earth didn’t you answer the phone? ——I’m terribly sorry, but the doorbell ____ , too.
Professor Hunter was soon told ____he discovered was not important to them.
—— Could you be so kind to close the window? —— ___ .
.—How many students, do you think, will be present at the meeting?—I expect ____ 20 students at the meeting.
---I’m sorry. I’ve left my credit card home. And I don’t have enough cash for the meal. --- Don’t worry. ___________.