问题
选择题
Tom’s teacher kept on telling him to practise speaking English, but _______ didn’t work.
A．he
B．which
C．all
D．it
答案
答案：D
题目分析：but 后句子少主语，而主语恰巧是Tom’s teacher kept on telling him to practise speaking English这件事，it 可代替前一句。故选D
点评：it词简单，可用法可不简单，平时学习要多注意it的用法