---________________?---He is tall and strong.
We will never forget those happiest days _______ we spent on the summer camp.
We wondered __________ this afternoon.
The little boy was last seen __________ football by the river.
They found __________ impossible to finish so much work in such a short time.
— I rang the bell for a long time last night, but no one opened the door.— Oh, the family __________ a party and they didn’t hear the bell.