A. 花园 B. 公园 C. 校园
A. on B. under C. in
A. 谁的 B. 什么 C. 谁
A. across B. cross C. over
A. plant B. class C. grass
A. copy B. type C. tape
A. He are opening it. B. He is opening it. C. He was opening it.
A. She is sharpen it. B. She was sharpening it. C. She is sharpening it.
A. He is dusting it. B. He dusts it. C. He are dusting it.
A. She is looking at it. B. She looks at it. C. She was looking at it.
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