【题目】She has studied in this school she was seven years old.

A. since B. if C. until D. after

【题目】Difficulties are nothing _____we are not afraid of them.

A. for B. as C. if D. whether

【题目】I enjoy fresh air so I always let the window open ________ it is really cold.

A．unless B．when C．if D．since

【题目】I really enjoyed your speech，________ there were some parts I didn't quite understand.

A．because B．for C．until D．though

【题目】---How many Chinese astronauts ______ into space since 2003?

----Twelve , including two women.

A.were sent B.sent C.have been sent D.have sent

【题目】My grandfather have an old house in _____ they have lived for 70 years.

A. that B. which C. what D. where

【题目】—What about playing football this afternoon, Sam?

—I would rather at home than football. It’s too hot outside.

A.stay; playing B.stay; play

C.to stay ; to play D.to stay; playing

【题目】I remember ______ the math problem ______.But I can’t remember it’s answer.

A.working ;out B.to work ;out

C.working ;with D.to deal ;with

【题目】---May I have a look at your plan for the robot ?

----Sorry ,I’ve _____ it at home .

A.missed B.forgotten C.left D.lost

【题目】I have heard a lot of good things about you _____ I came back from abroad.

A. since B. when C. before D. until