This problem is _ for us; therefore, we must take it into serious consideration.
—Would you permit me ___________ here? — Sorry. We don’t permit ___________ in the lab.
I’ve taken someone else’s green sweater by mistakes. It ______ Harry’s. He always wears green..
_____ means to do what you promised.
It is our ______ to enjoy the moon on Mid-Autumn night.
______ him and then try to copy what he does.