Li Ming is said ______ the experiment in the lab, but I can’t find him there.
The medicine won’t cure the disease -- it ________stops the pain.
The people who objected to cloning human beings went on strike and _________ the traffic.
Only after he realized the significance of mastering two languages __________ English carefully.
_________ with common sense can tell the difference between the two.
_________ that the government can lead them out of the financial crisis, people are optimistic about the future of the country.