Have you mended your shoes, Bob?—Yes, I _________ them twenty minutes ago .
What a big storm last night!—Yes. I was doing my homework. Suddenly, all the lights in my house _______.
Mr Smith knows a lot ______Beijing Opera.[ ]
______ a medicine box under her arm , Miss Zhao hurried to look after the man.[ ]
When can I play computer games, Mum?–______ your homework _______.