—Why, my new computer is rubbish! Five hours has passed and it still hasn’t finished the downloading. —Don’t worry. You know, sometimes the Internet ________ be very slow.
Wit a large amount of work _______, the chief manager couldn’t spare time for a holiday.
If _______ , English teachers must pass the oral and written tests.
The WTO can’t _____ its name if it doesn’t include a country that is home to one fifth of mankind.
He may have seen the film when it was shown last week, _____ he?
If you have to plough the field anyway, you _____ as well plant crops at the same time.