单选题If he______the storekeeper's scissors, he would
单选题No matter how frequently______, the works of
单选题______, will Mr. Peter be able to regain control
单选题By the first decade of the 21st century,
单选题The atmosphere is as much a part of the earth
单选题______, I will take her as my wife.
单选题I don't skate now, but I used______when I was a
单选题It's no use______me not to worry.
单选题All of us would have enjoyed the party much more
单选题All flights______because of the terrible weather
单选题To succeed in a scientific research project,
单选题______ whether he will come or not.
单选题Only under special circumstances______to take
单选题The well-maintained facility in San Francisco
单选题The woman over there is none other than______
单选题It is generally thought to be of importance to a
单选题Neither the students nor the teacher______the
单选题If only I______play the guitar as well as you!
单选题I am not a diplomat now, but I______.
单选题Doing your homework is a sure way to improve