There are _____ days in February. (   )

A．20

B．29

C．28

D．Both B and C

______ and twelve is ninety. ( )

A．Seventy

B．Seventy-two

C．Seventy-eight

根据图片选出正确的单词。   
（1）________
(one   two   three   four   five)    (chair   chairs)
（2）________
(one   two   three    four    five) (desk   desks)
（3）________
(six  seven   eight   nine    ten) (ruler  rulers)
（4）________
(five    six    seven    eight    nine) (book   books)
（5）________
(two   three  four   five six)    (boy  boys)

There are ______ boys in my class. (   )

A．twenty-three

B．twenty-third

C．twentieth-three

写出下列单词的汉语意思
1. clever ___________
2. very ___________
3. eighteen ___________
4. nineteen ___________
5. dear ___________
6. fifteen ___________