We have done things we ought not to have done and ________ undone things we ought to have done.
Since the road is wet this morning, _____ last night.
— Where is John? — He _____ in the library.
In recent years many football clubs ______ as business to make a profit. A. have run B. have been run C had been run D. will run
If their marketing plans succeed, they ____ their sales by 20 percent.
If the weather had been better, we could have had a picnic. But it ____ all day.