the young boy found ____hard to finish the work on time 1.that 2.it 3.this 4.its
问题描述：
the young boy found ____hard to finish the work on time 1.that 2.it 3.this 4.its
答
选2,it
it做形式主语,表示finish the work on time
还原后是the young boy found finishing the work on time is hard
年轻的男孩发现很难按时完成工作