—What's your feeling now?—I am terribly sorry. If only I ________(come) here yesterday!
_____ by a black hole, Li Yanping was so frightened at first, but he calmed down later and tried his best to escape.
Mary has______ speaking dialects, so it is not surprising to see her communicate with the people from different parts of this country easily.
We don’t have to ________ every word that we don’t know when reading.
Many a man _________ come to offer us help.
We’ll discuss the problem ________ lunch time.