31. I like getting up very early in summer. The morning air is so good ______.
—He_______to the meeting. Have you informed him of it? —Sorry. I _______to.
It is not enough only_______the rules of grammar if you want to learn English well.
He _______the person referred to be put in prison.
________you I owe a thousand apologies having doubted your ability.
_____at in this way, the present situation about birds flue doesn’t seem so disappointing.