【题目】My mum is waving _________ goodbye. ( )

【题目】I am high up ________ a plane. ( )

【题目】I’m walking in the park, but it starts ________. ( )

【题目】Some birds are flying ________ the sky. ( )

【题目】The old woman is falling ________ her chair. ( )

【题目】I often have noodles _________ lunch. ( )

【题目】Sam likes playing ________ piano and Amy likes playing ________ table tennis. ( )

【题目】Daming is playing the suona _______ the third time. ( )

【题目】Class begins. Our Chinese teacher comes __________. ( )

【题目】The phone rings, _________ he doesn’t answer it. ( )