We all think highly of the important part Wang Zhizhi ___________ in this match.
It is believed that a new kind of drug _____ by the scientists and they are hopeful that they will succeed in a few months.
— He was given a free five-day trip to Hainan. — He _____ it since he has worked so hard.
—When was Tom bitten by a snake? —It was on a Sunday _______ he was taking a trip to the mountainous area.
Jane said, “What did he hear about a week ago?” Jane asked ____ about _____.
Most people think that it is _____ to spend some time surfing the Internet, but we shouldn’t be too dependent on it.