-- How much pork is there in the fridge? ---__________We need to buy some,
—He’s never seen the film Rio2 (里约大冒险2) before, _________ he?—_________. He went to see it last week.
Let’s ________ these bottles into different boxes for different use.
It’s necessary _________ us _________ more trees in spring every year.
In Britain, people won’t touch you or push past you if you’re _________.
Three years has passed _________ they came to this school.