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 Some scientists think it will take          of years to make robots do most work for humans.

   A. hundreds                  B. hundred                  C. thousand

 Between the two hills _____a deep river.

A. are   B. have C. has  D. is

Did you know that the earth is home to _____animals?

A million    B. millions      C. million of       D. millions of

Please turn to page __________ and look at the ____________ picture in this unit.

A. twentieth; one B. twenty; one C. twentieth; first D. twenty; first

I am very thirsty. Could you please give me ______ water?

A. some  B. little  C. many  D. other

—Do you know that there are many different _____ animals in the zoo?

—Yes, I do. And I also know that some of them are _____ scaring.

　 A. kinds of; kind of　　　　　　　　　　 B. kinds of; kinds of

　 C. kind of; kinds of　　　　　　　　　　 D. kind of; kind of

--- how was your weekend?

---Great! It was my grandfather’s _______ birthday. We enjoyed ourselves.

　　　 A. seventy　　　 B. seventieth　 C. the seventieth　　 D. seventeenth

 Some word puzzles in this book are ____ difficult that _____ students can solve them.

A． such; few     B. such; little         C. so; few     D. so; little

—There is      milk in the fridge. Please buy some on your way home.

—All right.

A. much        B. many         C. little          D. few

 Our school is so famous that      people come and visit it every term.

  A. hundred        B. hundreds        C. hundred of        D. hundreds of