look who ______(cut) trees over there?--they ______ down a lot of trees last sunday.

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look who ______(cut) trees over there?--they ______ down a lot of trees last sunday.
look who ______(cut) trees over there?--they ______ down a lot of trees last sunday.

look who ______(cut) trees over there?--they ______ down a lot of trees last sunday.
are cutting , cut
根据look 判断,第一空用现进,再根据第二句中的they,可知第一空填are cutting 而不是is cutting . 根据过去时间 last sunday判断第二空用过去式cut . this was his first visit ___ china ,he said the trip ____china was very interesting.
A.to,to B. to ,for选A

look ! who (are cutting ) trees over there? --they ( cut) down a lot of trees last sunday.

望采纳,谢谢~~~

is cutting;cut