The 12-year-old girl ____ homework in the telephone booth while her parents were cleaning the street nearby.
A. was doing B. would do C. has done D. did
Jack will go to Australia for further study tomorrow, so he ____ his luggage at present.
A. has packed B. is packing C. packs D. will pack
With the help of e-commerce, people throughout China ____ easily buy things from foreign countries online.
A. would B. should C. must D. can
You can’t dial 110 ____ you are in an emergency and in need of help.
A. if B. until C. unless D. though
I argued with my best friend yesterday,____ he was still willing to help me.
A. so B. but C. and D. or
-____ have you done the volunteering work in your community?
--Since I moved to our neighborhood.
A. How soon B. How often C. When D. How long
