we have done a lot to build a low-carboneconomy, but it is _______ ideal. We have to work still harder.

It has been so foggy recently – Cheer up! The fog______ to clear up from tomorrow.

Mary is in bed with a fever and she can’t hope to ________ the cold in a few days.[ ]

______, we’ll go camping.

下列句子中加点的成语的使用，不恰当的一句是（ ）