He was busy writing a story, only ______ once in a while to smoke a cigarette.
The time that he ________ in playing computer games each day is about two hours.
The book ________ I bought yesterday is very interesting.
—Would you mind if I turned on the radio and listened to some music? —________. In fact, I also like listening to music.
.It is reported that the number of people who ________cars in China ________increasing fast.
.None of us know what happened ________ him ________ the evening of November 12.