What is under the desk?-_________.A.It is a rulWhat is under the desk?-_________.A.It is a rulerB.That is a catC.They are red boxes选哪个?语法是什么?为什么选这个?急,

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What is under the desk?-_________.A.It is a rulWhat is under the desk?-_________.A.It is a rulerB.That is a catC.They are red boxes选哪个?语法是什么?为什么选这个?急,

What is under the desk?-_________.A.It is a rulWhat is under the desk?-_________.A.It is a rulerB.That is a catC.They are red boxes选哪个?语法是什么?为什么选这个?急,
What is under the desk?-_________.A.It is a rul
What is under the desk?
-_________.
A.It is a ruler
B.That is a cat
C.They are red boxes
选哪个?语法是什么?为什么选这个?急,

What is under the desk?-_________.A.It is a rulWhat is under the desk?-_________.A.It is a rulerB.That is a catC.They are red boxes选哪个?语法是什么?为什么选这个?急,
B C题目问的是单数 显然不能回答复数
A提问可以看出那样东西远离问问题的两个人 所以用 that is

A.It is a ruler.

A 句子中is说明是单数,C排除,没有特指什么东西,用It

选A
因为是单数,所以不选c
主语应该是单数的它,所以选a

选B

B,意思是:桌子上面是什么东西?根据选项的意思来说,第一个是:它是个直尺。第二个是:那是一只猫。第三个是:他们是红色的文具盒。所以只能选B

选A

选B

选b

选b

B

b

B