If the weather had been better, we could have had a picnic. But it ____ all day.
Mike often argues ______ his friend ______ small things, which makes all of us very unhappy.
_____ makes this shop different is that it offers more personal service.
No one has yet succeeded in solving the _____ of how life first began.
_______ his sister, Jack is quiet, and does not easily make friends.
. The television station reported several times to _________ drivers parking their cars on the blind road.