I'd love ___ to your party last Sunday if not because of the unexpected guests.
Because they hadn’t booked a room in advance,there were left when they arrived at the hotel.
It is difficult for any of us to eat better, exercise more and sleep enough _________ we know we should.
I know I can’t change the world completely, but I’m proud that I can help here and there, and _____ to people’s life on an individual level.
Usually, I’m working in areas ____ have no water such as Kenya and Sudan, ____ famine is a pollution.
I didn’t hear the telephone ringing. I _____.