Mr. Keller ______ forty cigarettes a day until he gave it up.
The patient was ___of losing his life and had to be operated on at once.
It was _____that we went camping on the mountain.
We don’t allow ___in the office. But you are allowed ____in the rest room.
I was about to go out ________ it began to rain.
________ what the teacher said if you think it is important.