làm nhanh và đúng giúp em với ạ 15p nữa em nộp

13 After (hear) hearing he conditions I deciede (not enter) not to enter for the competition

14 to explain - to listen - grumbling

15 making - to do

16 having - to get

17 try(to forget) it;it isn't worth(worring)about it

18 .  The horse won't be well enough (run)to run in tomorrow's race. He doesn't seem (have recovered)to have recovered from his long journey.

19  At first I enjoyed (listen)listening to him but after a while I got tired of (hear)hearing the same story again and again.

20 driving - to be driving