----Howcanwestoptheglobefrombeingwarmer?-----Ithinkmore...

問題詳情：

---- How can we stop the globe from being warmer?

----- I think more trees _____ every year.

A. should plant  B. should be planting  C. should be planted  D. should be plant

【回答】

C

知識點：動詞語態

題型：選擇題