The students were studying in classroom when, all of sudden,the lights went out.
---Would you mind if I turned on the TV? ---Not at all. _______
I ______ go to the cinema, but I haven’t had time since I entered senior high school.
_______, ice can be changed into water and water can be changed into steam.
--- How do you want to post it? --- It is only printed matter;_______ mail is OK.
---Do you know what a computer system ________ ? ---Hardware and software. Am I right?