I have to write a ______article about the use of oxygen cylinder every week.
A.two-thousand-word
B.two-thousands-word
C.two-thousand-words
D.two-thousands-words
正确答案是A
I have to write a ______article about the use of oxygen cylinder every week.
A.two-thousand-word
B.two-thousands-word
C.two-thousand-words
D.two-thousands-words
正确答案是A