The number of the students in our school is about nine _____. —I see. ______of them are boys.

The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.

He didn’t stay up late last night. — ________. [ ]

I don’t know _____she is. –Mrs Smith says she is a shop assistant.

Look at my new digital camera. I bought it _____ June 1, Children’s Day.—Wow, how nice![ ]