1) waste
2) start off, end up
3) turn off
4) look up
5) need
Объяснение:
1) When you need to study, you don't want to waste time.
2) It's easy to start off working well but end up doing something else
3) It's a good idea to turn off your music,
4) You can use the internet look up to information
5) Make sure you have everything you
need before you start