问题

If people _ the importance of living a low-carbon life earlier, there _ so many environmentalproblems now. [ ]

A: realized; wouldn't be
B: had realized; wouldn't be
C: had realized; wouldn't have been
D: realized; wouldn't have been

正确答案是：

同类题型

I can’t find my watchI must have ________it in the hotel

I regret ______ those weight-loss pills, because I am now in hospital．

选出下列加点词，不是古今异议词的一项是（）

We’ll go early，we may not get a seat

The knowledge that I had caused him to lose his job made me bitterly ______.