At the meeting they discussed three different ______ to the study of mathematics.
Thank you for all your hard work last week. I don’t think we ____ it without you.
--- Does _____ of these two buses go to the station?--- You can’t get to the station by __________ of them.
—— Have you ever seen a whale alive?—— Yes, I’ve seen ___.
With so much water being used in the bathroom,it is no _____ that more environmentally friendly technologies have come out to make better use of water resources.
.Nothing but one desk and six chairs ________ in the room.