Scientists were warning the world about global warming 60 years ago. If people had acted quickly back then, they ………………………………….(stop) today’s disasters. But they did nothing.
举一反三
- Scientists were warning the world about global warming 60 years ago. If people had acted qu
- If people had acted quickly back then, they(stop) _____________today’s disasters. But they did nothing.
- 6.How many cans does the United States use in one year? I know that is quite impossible but if you put them end-to-end, they __________(reach) to the moon and back twelve times.7.Scientists were warning the world about global warming 60 years ago. If people had acted quickly back then, they __________(stop) today’s disasters. But they did nothing.8.My first mistake was that I sat down on his right. I didn’t realise that, as he was the guest, he _________(sit) on my right.
- If people had acted quickly 60 years ago, they would have stopped today's disasters.
- If people ________ quickly back then, they would have stopped today’s disasters. But they did nothing. A: had acted B: acted C: would acted D: have acted