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
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