According to the research, 20% of the population was ___________of developing lung disease from second-hand smoking. ( ) A: at a time B: to begin with C: at hand D: at risk

Why not do it ________? Let me give you a helping hand this time. A: second time B: a second time C: two time D: the second time

The first and second beats of waist-twining step are same. Beat the drum with the right hand and then the left hand.

Fred is the second to hand in maths papers in our class, but believe it or not, [br][/br]he ____(success) passed the last exam、

Michael holds the right attitude toward the competition. On the one hand, he wouldn’t think it is a shame of winning the second place, on the other hand, he would try his best to win the first place.

I've found a second - hand car I want to buy and I would be ________ if you would go with me to give it a swift examination.

Kate learnt that __________. A: there is a shop that sells good second-hand bikes B: the police have a sale of abandoned bikes C: there is a sale of second-hand bikes every two months D: the police sell abandoned bikes to a second-hand shop

. The price of the second-hand piano is relatively ______ recently.

Books found in second-hand bookshops may _____.

A new laptop costs about of a second-hand one.