---So I’m going to make the desk myself.---Why ____ instead, if I may ask?
The computer system _______suddenly while he was searching for information on the Internet.
Whatfun it is to walk alone withfull moon hanging in the sky.
I insisted __________ to see a doctor, but he insisted nothing __________ wrong with him.
He studied hard, __________ the exam.
What makes us worried is that the number of people ______to drug is ________.