He isstrong enough to lift the heavy box without ________
He isstrong enough to lift the heavy box without ________
A.effect
B.effort
C.energy
D.strength
答案及解析： B
解析：
Without effort不费什么劲
He isstrong enough to lift the heavy box without ________
A.effect
B.effort
C.energy
D.strength
答案及解析： B
解析：
Without effort不费什么劲