Ответ:1.The engine won't start unless you press both buttons

2.We arruved in good time in case we were afraid the coach might leave without us

3.You can use my laptop but it have to be provided to me by ten o'clock

4.It's time we start cooking now, else the food won't be ready in time

5.The neighbours will complain if you keep playing your drums at night

Объяснение:

Verified answer

1) unless you press

2) in case our coach might leave without us

3)  provided i must have

4) need to start cooking or else

5) if you keep playing

6) rather not eat