问题

A number of birdwatchers __in Zhalong Nature Reserve. The number of them500.

A:are, are
B:is, is
C:is, are
D:are, is

正确答案是：

标签： birdwatchers , number

同类题型

This math problem is ______ difficult ______ that one. [ ]

You shouldn’t wait here, _____ you can go and ask Jim why.[ ]

I can swim, _____.[ ]

They usually have _______at 6:30 a.m.

Mom and Dad, let me ____ the dinner today.