he was about forty years old,___and industrious,and make a living from the little farm,which is now grown with weeds.

问题描述:

he was about forty years old,___and industrious,and make a living from the little farm,which is now grown with weeds.
frugal thrift economic

这个要选择frugal
thrift是个名词
而economic有意思上不合适
这里是两个形容词连用,因此要用frugal and industrious,相当于中文的“勤俭节约”吧