【題目】He is much younger than me, but he is 5 centimeters ________.

【題目】Tom is a naughty boy and he often plays tricks ________ us.

【題目】---Who taught you making paper flowers?

【題目】We all know Mother’s Day is celebrated ________ the second Sunday of May.

【題目】Many children start to practice playing ________ piano at an early age.

【題目】—What about doing something helpful for the sick children？

【題目】—I will go to Beijing on business this weekend, so I can't go camping with you．

【題目】Don't read Wechat while you_____across the street．

【題目】I went over my latest papers again and again_______I could get full marks．

【題目】British people and Australian people speak the same language,__________they have different customs and cultures．