What the doctors really doubt is ______ my mother will recover from the serious disease soon.A.when B how C whether D why
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.
______, I think, and all the problems could be settled.