Daddy, will you come home for supper with us tonight—_______, but I might be a little late.

On summer nights, the weather is usuallyhot at night in the south of China.— Yes, so I often go to sleep ______ the window________.

Scientists show us that __________ you use your brains， ___________ it will be.

I prefer to go to the cinema rather than ____ video at home.

You _______ smoke in the hospital.