Sam spends two hours _______ his homework every day.A. to do B. doing C. do
Mike is studying in _______ university and he wants to be _______ engineer .
--- How did you find your visit to Dalian, Joan?--- ________.
Mike would rather ________emails to friends while John prefers________ phone calls.
Put it down, Kitty. You mustn’t read ________letter.
She has very________ close friends so that she really doesn’t know________.