.Most of the teaching equipment presented by the Hope Project, as well as the books, ______made good use of in the village school.
Many teenagers say that _____ they have a lot of friends, they really have no best friend.
As we know, penicillin became the greatest drug of the 20th century, ______ millions of lives.
—How long _______ in Shanghai? —I will be there attending a conference and giving a speech, which will take about 3 days.
If he _______ the opportunity at that time, he would be the new department manager now.
To everyone’s amazement now, technology ________ faster than most people can keep pace with.