问题
Did you know the Earth is home to __________ animals?
A:million
B:millions
C:millions of
D:million of
B:millions
C:millions of
D:million of
正确答案是：
同类题型
Your shoes are too old, Why not buy a new _______? —I think so.[ ]
Do you have enough students to clean the laboratory? –No, I think we need____________ students.
John, I know nothing about playing tennis．I wonder if you could teach me. —___．Just name the day.