----Time to go to bed, Mary.----Oh, mum. I won’t go to bed _______ I finishes my composition.

–How do you like the two pairs of shoes?--They don’t fit me well. They are ______ too big _____ too small.

– You bought the car about ten years ago? -- Yes.        it’s old, it still runs well.

 —How do you like the popular documentary “A Bite of China”（《舌尖上的中国》）?—Excellent! You won’t realize how wonderful our Chinese food is _____ you watch it.

Sometimes I feel bored and don’t  know ______ to do.