By the end of last week, she______in the west of China for two months helping the homeless children.
A. will stay B. has stayed
C. would stay D.had stayed
Susan and Lily______tomatoes a nd other vegetables on the farm this time yesterday.
A. pick B. are picking
C. will pick D. were picking
The robot can help me sweep the floor. smart invention it is!
A. What B. What a
C. What an D. How
Aunt Lucy will tell us something about her trip to Australia when she______back.
A. came B. comes
C. would comeD. will come
John didn’t give up looking for a job __________ he got an offer from a German company.
A. untilB. since
C. becauseD. if
— Would you like to go to the cartoon show with me?
— It sounds like fun, ______I’m too busy.
A. soB. for
C. orD. but
