— Which of the caps will you buy?— I’ll buy ______ , one for my father and the other for my mother.
—Why didn’t you go to the party last night? — I __________.
I discovered that listening to ______is the secret ______language learning.
The students don’t know the broken computer.
I don’t know if Mr. Smith ____. If he ___, I will tell you.
He used to __ in a small village, but now he has been used to __ in the big city.