__________ When does your mother go shopping?—Usually_________ Sunday mornings.[ ]

Liu Dehua, Zhou Jielun and Lin Junjie are famous _____ their pop songs.[ ]

Dad, it’s such a long way from our home to Tianyi Square!— You mean it’s _________to take a taxi ?

I want to buy a nice present _____ my mother and I must give it _____ her myself.[ ]

He wants to be a doctor when he ________.