问题
It was not until dark ______ he found that it was the correct way to solve the problem.
A:that
B:what
C:which
D:when
B:what
C:which
D:when
正确答案是：
同类题型
The Nile River ____ flood large areas but now thewater ____ produce electricity.
The teacher is ______ Tony, because he often sleeps in class.
Eddie is eight years old, but we have seven candles only, we need______ candle.
一Did you have a good time at Suzhou Amusement Park last weekend一Yes, it was amazing day!
How do you find the match between Spain and Switzerland?—It’s ！ Powerful Spain lost the game by 0∶1.