算一算，并用英语单词写出得数。
【小题1】90－20= __________
【小题2】40 + 40 = __________
【小题3】66－6= __________
【小题4】78－28 = __________
【小题5】99－69= __________
【小题6】105－15 = __________
【小题7】40－8 = __________
【小题8】70－21 = __________
【小题9】33 + 9 = __________
【小题10】20 + 57 = __________

根据提示，完成句子或对话。
【小题1】______ and ______ is ______. (11+28=39)
【小题2】—______ (What, What’s) two and three?
—______ (It’s/ They’re) five.
【小题3】—What ______ (is, are) ten and eleven?
— ______ ______.
【小题4】are, thirty-one, in, school, classrooms, there, the (.) (连词成句)
____________________________________________________
【小题5】twenty-three, eleven, is, and, twelve (.) (连词成句)
____________________________________________________

选择恰当单词完成下列加减法。
four    six    three    ten    seven
【小题1】one+two= ____________
【小题2】five-one= ____________
【小题3】twelve -five= ____________
【小题4】two+ __________= eight
【小题5】eleven - _________ = one

判断：
— How much is the flower? （_____）     
— It is five yuan.

The Olympic Games take place every _________years. (   )

A．three

B．four

C．five