下列各句中，划线的成语使用恰当的一项是(3分)

There a football match between Class 1 and Class 3 tomorrow.

Is any possibility the majority of the labour force will work at home in the next few decades

We’re doing a lot to protect ourenvironment, but it is not good enough. —Sowe should try______ to look after it.

The official made clear that he would do everything possible to solve the problem.