问题
选择题
There are so many books!It is not easy for us to decide what to take and what to .
A．take on
B．pick up
C．leave behind
D．work out
答案
答案：C
句意为：有那么多书，很难决定如何取舍。take on表现，展现；pick up拣起，拾起；leave behind未能或忘记带某人某物,留下……；work out解决,回答出。
