20．____ other stars are much bigger and brighter than the sun.

　A．Thousands of

　B．Thousand of

　C．The thousand of

　D．Thousands

19．Six million, six hundred and sixty-six thousand, six hundred and sixty-six is ____ .

　A．6,666,666

　B．666,666,666

　C．6,600,666

　D．60,600,666

18．There are about ____ books in our school library.

　A．five thousand, three hundred and forty-five

　B．five thousands and three tundreds and forty-five

　C．five thousands, three hundred and forty-five

　D．five thousand, three hundreds and forty-five

17．There are ____ in our town.

　A．three throusand and eighty-six

　B．three thousands and eighty-six

　C．three thousand and eighty six

　D．three thousands eighty six

16．There are ____ students in our school.

　A．eight hundred and fifty four

　B．eight hundred and fifty-four

　C．hundred of English words

　D．several hundred English word

15．We have learned about ____ these years.

　A．several hundreds English words

　B．hundreds of English words

　C．hundred of English words

　D．several hundred English word

14．There were ____ visitors in Hong Kong on July 1, 1997

　A．thousands

　B．thousand

　C．thousands of

　D．thousand of

13．“Li lei, which is ____ day of a week?”“Thursday, I think.”

　A．fifth

　B．the fifth

　C．five

　D．the five

12．The beautiful hotel is about ____ years old.

　A．hundred of

　B．a hundred

　C．a hundred of

　D．hundreds

11．Kate is ____ girl.

　A．a eighteen-year-old

　B．an eighteen-years-old

　C．a eighteen-years-old

　D．an eighteen-year-old