—I'm sorry I stepped outside for a smoke. I was very tired.—There is no________for this while you are on duty.
A teacher's ___ to education is worth great respect of the whole society because it brings benefits to the development of society.
—What do you think of the American singer Lady Gaga?—Too crazy, but if she ___ come to China to hold concerts, I would buy tickets for her live show.
___ more and more people may refer to the Internet for the latest news, it is unlikely that the newspaper will disappear.
—I'm sorry; I shouldn't have been so rude to you.—You ___ something not very nice to me, but that's OK.
—Can you describe ___ it happened?—Yes, I was riding on my bike ___ a car knocked me down from behind.