I don’t like winter _____ it’s too cold.
When a child realizes he should stand on his own feet, he has grown up.
Lucy met her mother in the park by chance.
Tom helped the teacher to hand out the test papers, didn’t he ?
—Who broke the window?— ______. A strong wind broke it last night.
—I can’t stop smoking, doctor.— For your health, I’m afraid you ______.