I didn’t quite follow him because he explained the theory _____that is too abstract for me.
It is foolish of him to __________ his notes during that important test, and as a consequence, he got punished.
I am willing to do whatever my country requires __________ me.
You'll find it hard to get rid of the drug habit _______ you have it.
— The weather is changeable here. Please take more clothes. —_____________.
We can no longer ________ to consider water an almost free resource that we can use as we like.