Check your car _________ you start your journey.

Thanks to the rescue service’s timely arrival, we are still __________ after the terrible natural disaster.

Nowadays children are bearing too heavy alearning burden —______ So much homework do they haveto do that they almost have no time for other activities

下列句中划线的词语使用正确的一句是　 （　　）

k you should complain—_________ , of course, you are happy with the way things are.