The doctor will be free ____.
A.10 minutes later | B.after ten minutes |
C.in ten minutes | D.10 minutes after |
____ my opinion, American eat too much meat.
A.For | B.To | C.In | D.Upon |
Steve and Jane are both very good ____ chemistry.
A.at | B.for | C.in | D.on |
Do you often help your father ___ the farm work during the summer vacation?
A.for | B.on | C.in | D.with |
Do you often help your father ___ the farm work during the summer vacation?
A.for | B.on | C.in | D.with |
They sometimes go on working ____ the light of the moon.
A.on | B.under | C.by | D.for |