Rainbows ________ when sunlight passes through small drops of water in the sky.
produce
produced
are produced
were produced
Shall we go to amusement park right away or the day after tomorrow?
______. Any time will do. ( )
A.Excuse meB.Have a good time
C.It's up to youD.I'm afraid I can't
Why do you ______ Liu Hulan?
Because she is a great hero. ( )
A.look likeB.look downC.look overD.look up to
A good friend is someone you ______ share your pleasure and pain with. ( )
A.canB.needC.shouldD.must
A little effort every day, you ______ a big difference. ( )
A.makesB.madeC.have madeD.will make
What do you think of the boy?
He is ______ honest student today and ______ useful man tomorrow. ( )
A.a; anB.an; aC.an; anD.a; a