58（）

Not until the game had begun __ at the sports ground.

• A、should he have arrived 

• B、would he have arrived

• C、did he arrive

• D、had he arrived

Why is debate important？

• A、It helps people understand others better.

• B、It allows people to present their opinions.

• C、It develops one' s thinking and communicative competence.

• D、It gives one the opportunity to brush others' opinion aside.