We all know how difficult it is for all of us to eat better, exercise more, and sleep enough________we know we should.
I invited Joe and Linda to dinner, but ________ of them came.
Only when he is seriously ill ______ in hospital.
I would advise you there by bus, because it’s too crowded.
The reason I’m writing to you is to tell you about a party on Saturday.
-Will you stay for lunch? - Sorry, I _____. My mother is coming to see me.