Instead of using it at war, scientists are turning to research into the use of nuclear power for__________ purposes.
If he had started at nine o’clock,he have been in London by eleven o’clock.
Jack,you’re so lazy!This job hours ago.
He have come here yesterday, he?
At last he finish the work ahead of time.
—Is the flight from Shanghai on time?—Of Course,it is.It be arriving in 10 minutes at Gate 9.