During the entrance exam，there are___________ parents waiting for their children outside the test centre.
#51727
A
thousand of
B
thousands of
C
thousand
D
thousands
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There are_________ students in my school._________ students in my school is over 5000.
#51675
A
a number of, A number of
B
the number of, The number of
C
the number of, A number of
D
a number of, The number of,
Sun Tao has had a _______ English course, but he still doesn't know
#51776
A
six-month; how to spell this word
B
six months; how spell the word
C
six-months; how he should spell this word
D
six-month; how should he spell the word
Because of Project Hope, ___ children have better lives.
#51896
A
thousand
B
thousands
C
thousand of
D
thousands of
It is said that the gravity on Mars is only about of the gravity on earth.
#51511
A
three-eighths
B
third-eighth
C
third-eighths
D
third-eight
The earth is years old.
#51891
A
four thousands six hundreds
B
four thousand six hundred
C
four thousand and six hundred million
D
four thousand six hundred millions