He coughed day and night. His wife asked him to stop smoking.

The lesson is easy for the students. You see there are _______ new words in it.

1–I prefer to have ahamburger rather than_______ a glass of milk.–Hamburgers? You’d better not eat __. It’sjunk food.

The single most important factor ____ contributes to success is _____ you do every single day．

However _______, it’s worth it and I’ll get it .