Our teacher makes good use of any time______ he can spare.
It was in the lab, _______ was taken charge of by Mrs Smith, they found the missing necklace.
_______ for his action on the playground, but he is also famous for the things that he does off the playground.
I'm moving to the countryside because the air there is much fresher than _______ in the city.
—Is Alice still performing? —I'm afraid not. She is said _______ the stage already as she has become a director.
Don't just give me a simple “yes” or “no” to my questions. Explain _______ possible.