【題目】Some children enjoy McDonald’s hamburgers,but ______prefer Chinese fast food.

【題目】_______ of your answer is right. Would you have a third try, please?

【題目】________ easy way it is to search for information on the Internet.

【題目】Little Mary was looking at ________in the mirror when I entered the room.

【題目】The ground is covered with thick snow, for it snowed _______ last night

【題目】—Listen! Is that Cindy singing in the next room?

【題目】I’m not sure _______ my mother will come back home.

【題目】Grandfather ______collecting stamps after he retired. It's an interesting hobby.

【題目】Three years have passed ______David and Peter became pen friends

【題目】It's smoky inside the room. Why not keep the windows ________?