______ Shenzhen many times but we still don't know the city well.

A. We have gone to B. Though we have gone to

C. We have been to D. Having been to

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假設(shè)你是新華中學(xué)的學(xué)生李華，你的美國朋友Tom一周前給你發(fā)電子郵件，詢問你暑假里的打算，但你因準(zhǔn)備期末考試未能及時回復(fù)。請根據(jù)以下要點給他回封郵件：

1.未及時回信的原因；

2.你假期的打算（如做兼職、旅行、做志愿者等）。

注意：

1．可適當(dāng)增加細(xì)節(jié)，以使行文連貫

2．詞數(shù)：120左右。

Dear Tom,

_________________________________________________________________________________

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Yours,

Li Hua

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