【題目】We ____________ trees last Sunday. So far we __________ over 3，000 trees there.

A. planted； planted B. planted； have planted

C. have planted； planted D. have planted； have planted

【答案】B

【解析】句意：上周日我們種樹(shù)了。到目前為止我們已經(jīng)種了3000棵樹(shù)。根據(jù)時(shí)間狀語(yǔ)last Sunday可知用一般過(guò)去時(shí)態(tài)，plant的過(guò)去式是plant。根據(jù)時(shí)間狀語(yǔ)So far可知用現(xiàn)在完成時(shí)，其結(jié)構(gòu)是have done的形式。根據(jù)題意，故選B。

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