A-A+
Workers should keep in mind that _______using
问题详情
Workers should keep in mind that _______using this material carelessly may result in serious accidents since it is lethal.
A．they
B．their
C．them
D．themselves
参考答案
正确答案：B
解析：动名词using是that从句的主语。这里考查的是动名词做主语。应当使用所有格。动名词本来是从动词出发，所以可能做主语，也可能根据形式的不同而需要宾语或表语。
