It is a fine day today. 句中 it 指代什么？
A. 天气
B. 天空
C. 星期
下列关于some 的陈述正确的一项是：
A. some只能修饰可数名词
B. some 只能修饰不可数名词
C. some既可修饰可数名词，也可以修饰不可数名词
“河上有几艘船。“下列翻译正确的一项是：
A. There is some boat in the river.
B. There are some boats on the river.
C. There are some boat on the river
"莎莉正在看一艘大船。"以下翻译正确的是：
A. Sally is looking at a big ship.
B. Sally is look at a big ship.
C. Sally was looking at a big ship.
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