题型：单选题题类：真题难易度：普通

—Whenever you have difficulties, be sure to call me. —________________.

A、I have no trouble B、I am sorry to hear that. C、I will. Thank you very much. D、I will think it over.

举一反三

-___________. I've got everything ready.

—

— ________. I have another one at home.

— .

—

— __________. Mine is at home.

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