1.
___ is better for U to get up early if you don't want to be late for school
1. This 2. That 3. What 4.It
请问为什么答案是4,要怎么判断
2.
John wished that he ___ play the piano well
1.had 2. can 3. could 4. were
我知道这题只有3可以选,但是为什么假设语气不用had 要用 could have
假设语气可以出现助动词吗? 感觉有点奇怪
谢谢