问题
选择题
----_____is it that is troubling Mary ?
----Working out the maths problem..
A．What
B．How
C．Why
D．Which
答案
答案：A
考查表语从句。从句中缺少逻辑表语，故选A，是什么让玛丽很烦？
搜题请搜索小程序“爱下问搜题”
----_____is it that is troubling Mary ?
----Working out the maths problem..
A．What
B．How
C．Why
D．Which
答案：A
考查表语从句。从句中缺少逻辑表语，故选A，是什么让玛丽很烦？