Vegetables are cheap______when they are in season.A.to buyB.to buy themC.buyingD.to be bou

学历类 专四 已帮助 人

Vegetables are cheap______when they are in season.

A.to buy

B.to buy them

C.buying

D.to be bought

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。