（2014四川广安）—Do you know________？
—Sorry，I don’t know．
A．if she will come to the concert or not
B．whether she will come to the concert or not
C．if will she come to the concert
（2014安徽）As we all know，the Silk Road________China to the West in ancient times．
A．connects
B．connected
C．will connect
D．is connecting
（2014贵州贵阳）Our teachers are very friendly to us．We________friends since three years ago．
A．have been
B．have become
C．would be
（2014福建福州）—Jack，I have________working out the math problem．
—Don’t worry．Let me help you．
A．fun
B．trouble
C．experience
（2014湖北随州）—What do you think of the environment here？
—Wonderful！________of the land________covered with trees and grass．
A．Two fifths；is
B．Two fifth；is
C．Two fifths；are
D．Two fifth；are
（2012上海）The baby feels________while his mother holds him in her arms．
A．save
B．safe
C．safely
D．safety
