It’s quite warm here;we___turn the heating on yet
(2013·安徽卷)It be the vocabulary that caused you the problem in the exercise because you know a lot of words.
— What are you doing this Saturday? — I’m not sure, but I go to the Rolling Stones concert
— It rained cats and dogs this morning. I’m glad we took an umbrella. — Yeah, we would have got wet all over if we _______.
No one _____ be more generous; he has a heart of gold.
If he had spent more time practicing speaking English before, he _____ able to speak it much better now.