下列加点实词解释错误的一项是：（ ）

It’s a long time________I saw you last.—Yes,and what a pity it is now that it will be a long time________we see each other again.[ ]

Smoking, ____ some smokers, might ease their anxiety sometimes, but ____ the addiction caused by their constant practice, it is really hard to give up.

we were playing basketball on the playground, it began to rain.

_____ does your father go to the fitness center——He exercises there twice a week.