So absorbed ________ in the research that she didn’t hear someone knocking at the door.
--- How much vinegar(醋) did you put in the soup ? --- I’m sorry to say , _______. I forgot .
_______ all the inventions have in common is ______ they have succeeded .
We _______ each other the best of luck in the examination .
_________ recent report stated that the number of Spanish speakers in the US would be higher than the number of English speakers by ______ year 2090.
“ You cannot choose what life will have ,” Tai Lihua , a deaf dancer once said , “ but you can choose your attitude towards life”, and this is ______ I completely agree .