The emergency required that all the tasks _____ at least two days ahead of time. A.to complete B.should complete C.be completed Dshould have been completed
Don't be rude to your father. Never in his life ___________ that way.
It seems that living green is ___________ easy and affordable. A small step makes a big difference.
We only had $ 100 and that was ___________ to buy a new computer.
—Volunteering is becoming ___________ popular in China. —Yeah, people are now aware that helping others is helping themselves.
John opened the door. There ___________ he had never seen before.