The naughty boy is a bit hard to deal with，which________the trouble adapting to the new environment.
A．makes for B．adds to
C．focuses on D．devotes to
The naughty boy is a bit hard to deal with，which________the trouble adapting to the new environment.
A．makes for B．adds to
C．focuses on D．devotes to
B 考查动词短语辨析。add to “使(数量)增加；使(规模)扩大”。此处意为“……增加了适应新环境的困难”。make for有利于，促成；focus on集中于；devote to献身于。