【題目】Last March, many trees ________ along the streets to make our city more beautiful.

A. were plantedB. were planting

C. had plantedD. planted

【答案】A

【解析】句意：去年三月為了使我們的城市變得更加漂亮，沿街種植了很多樹。根據(jù)時間狀語Last March可知這里應(yīng)該用一般過去時，故排除B、C；句子的主語trees與plant之間是被動關(guān)系。故選A。

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