I wonder if you can finish it on your own.—You are wrong. I did it last night _______. [ ]

It is playing computer games _______ the boy spends most of his spare time.

Our dining hall is always ________________ teachers and students at noon.

According to my grandma, it is a good idea to eat chicken soup when you have a cold.— ________, scientists agree with her.

My brother will go to America for further education this summer.— _________ Actually, we have many good universities here at home.