国家开放大学 / 综合英语（1）
正确率：100%
At first he found _ _ _ _ _ _ what he wanted to.
a. that it hard to do
b. it hard to do
c. hard to do
d. to do it
a. that it hard to do
b. it hard to do
c. hard to do
d. to do it
参考答案：
佳题速递：