Let's look at the bag. Can you see “s”on the corner of bag?A. a aB. a theC. an aD. an

问题补充：

Lets look at the bag. Can you see “s”on the corner of bag?

A. a, a

B. a, the

C. an, a

D. an, the

答案：

A. a, a

B. a, the

C. an, a

(答案→)D. an, the

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