By the end of last month, we had produced _____ as we did last year.
—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.