.The symbolic one-hour switch-off first _____ in Sydney in 2007 has become an annual global event.
—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.