_________ trees have been planted these years.
#51783
A
Million
B
Millions
C
Million of
D
Millions of
推荐题目
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
My friend Vivian is an       girl.
#51827
A
seventeen- year- old
B
seventeen years old
C
eighteen –year –old
D
eighteen years old
Tree Planting Day is on ______ of March. 
#51094
A
twelve
B
the twelve
C
twelfth
D
the twelfth
The volunteers sent _______ books to a mountain village school on Children’s Day.
#51664
A
two hundreds of
B
two hundred of
C
two hundreds
D
two hundred