–Let’s take a coffee break, shall we?–I wish I ________, but I have a really tight schedule.
My parents live in a small village. They always keep some candles in the house __________ there is a power off.
We've worked out a method __________ our production can be greatly raised.
Part of the reason Charles Dickens loved his own novel, David Copper field, was __________ it was rather closely modeled on his own life.
It has been proved __________ eating vegetables in childhood helps to protect you against serious illnesses in later life.
The reason why he was sent to the hospital was __________ he was ill.