1.My borther wishes he (not waste) HADN'T WASTED time when he was young.
2.They wish they (come) HAD COME to class on time yesterday morning .
3.I wish I (spend) HAD SPENT my last summer vacation in the mountains .
4.I wish she (come) HAD COME to see me yesterday.
5.If only I (have) HAD HAD more time to do this job.
6.He missed an exciting football match on TV last night. He wishes he (match) HAD WATCHED it.