题目内容

Here ______ my ball.

A. is
B. be
C. are
D. am

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Eric and Kathy ____ my students.

A. is
B. are
C. be
D. am

The jam _____ good for my grandma.

A. are
B. is
C. be
D. am

__________ there any water in the bottle?

Are
Be
C. Is
D. Am

砂岩分类三角图解法中的三个端元分别为、和。