【题目】Every year natural disasters kill _________ people.
A.nine thousands
B.thousands of
C.thousand of
D.nine thousands of

---They bought it _____ me. It’s my birthday today!

A. at B. on

C. in D. for

【题目】The monitor told us ________ every morning.
A.mop up it
B.to mop it up
C.mop it up
D.to mop up it

【题目】— __________, is that your backpack?—Yes, it is.
A.Excuse me
B.Thank you
C.I'm sorry
D.Here it is

A. look B. looks

C. to look D. looking

【题目】— Are you a teacher?— _________________.
A.Yes, I'm.
B.No, I'm not.
C.Yes, you are.
D.No, you aren't

A. worries B. worried

C. worries about D. worried about

A. invite; to B. to invite; go to

C. inviting; to D. to invite; to

A. not to play B. don’t play

C. to not play D. to play

—________

A. Thank you. B. No problem.

C. It doesn’t matter. D. That’s all right.