题目内容:
Through doing this, the teacher will be able to ascertain the extent to __________the children understand what they are reading.
A.how ?
B.which
C.that ?
D.what
参考答案:
答案解析:
Through doing this, the teacher will be able to ascertain the extent to __________the children understand what they are reading.
A.how ?
B.which
C.that ?
D.what