Not until all the fish died in the river, ____ how serious the pollution was.
| A．did the villagers realize |
| B．the villagers realized |
| C．the villagers did realize |
| D．didn’t the villagers realize |
It took the early settlers more than 150 years to build up_______is now a modern city,
A where B which C whatD that
Only after he had spent several nights working on the maths problem_______to wonder whether the problem was wrongly set.
A did he begin B, he began C, he did begin D, began he
－Why are you so sweaty?
－I________football with my classmates and how I want to have a drink!
A was playing B had been playingC have played D played
________weather it is , we shall set out at 8o’clock.
A WhateverB WheneverC HoweverD No matter
Some children want to challenge themselves by learning a language different from_______
spoken by their parents at home.
A whatB thatC whichD one