It’s going to rain. You’d better ________ a raincoat.

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It’s going to rain. You’d better ________ a raincoat.

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It's going to rain. You'd better ________ the raincoat ________ you.

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It's going to rain outside. You'd better ________ your raincoat with you.

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---Mary, it’s going to rain. Better take ________ raincoat with you.

---Well, but I can’t find ________ raincoat I put here yesterday.

A．a…a             B．a…the            C．the …a           D．the…the