There were          different kinds of dinosaurs in the word in the past.
#51715
A
hundred of
B
two hundred of
C
hundreds of
D
two hundreds of
推荐题目
--Which T-shirt do you want to buy?-- The ________ one
#51796
A
threeth
B
third
C
three
D
thirty
—Bruce,how many students are there in your school?—Mmm, about            .
#51537
A
two thousands
B
two thousands of
C
two thousand of
D
two thousand
 Can you tell me _____ the birdwatchers in Zhalong Nature Reserve? I only know that _____ of them are from our school.
#51749
A
the number of; one- thirds
B
a number of; one-third
C
the number of; one-third
D
a number of; two-third
---How long have you been running ?  ---Since ______ .
#51857
A
two hours
B
two hours ago
C
I am ten years old
D
for two hours