Although I had the book assigned by the professor several times, it didn't make any __________ to me.
Only then _____ how much damage had been caused.
As we all know,dark glasses can ________ the eyes from strong sunlight.
How the big forest fire has remains to be a mystery.
It was on October 1st _____ new China was founded.
I would rather _____ the weekend at home than ______ all the way to such a place.