In view of all sorts of rumors and guesses, experts carried out some careful and scientific research and___________the possibility of a second earthquake in this area.
Why ________ it get colder when we climb up a mountain? We are getting nearer to the sun!
I ________ to my cousin's birthday party last night, but I was not available.
If we ________ a table earlier, we wouldn't be standing here in a queue.
—Shall we go for a drink at one o'clock this afternoon?—________. Will two o'clock be OK?
—I feel so nervous about the National English Speech Competition tomorrow.—________.