“Attention, please. Whoever can answer one of my questions______ receive a prize”, the teacher said in class.
She explained to me________personal computers let everyone explore their own ideas.
Sue will invite all her classmates to her house________coffee.
My doctor kept telling me about my weight, ________I never bothered.
In order to improve my spoken English, I read ________ English _______.
_______ in the room where Mr. Johnson lived _______ the exhibition was held?