The examination results suggested that I in poor health,so the doctor suggested that I more exercises to improve it.
When Jack arrived, he learned Mary _____ for almost an hour.
The speaker mentioned some writers and books _____ were known to us.
-----I called you at about half past eight last night but nobody answered. -----Oh, I _____ in my office at that time.
The number of deaths will be reduced greatly if people _____ to eat more fruits and vegetables.
-----You’ve left the light on. -----Oh, so I have! _____ and turn it off.