The thin woman was seen ______ down Huiwen Road at 10 p. m. last night
—Must we keep the window open all the time? A. No, you mustn’t B. No, you can’t. C. No, you don’t have to.
You’d better _______ too much meat. You are much too fat. A. not eat B .eat C. not to eat
---This bag is too heavy for me. Could you please do me _____ favor? -----Sure . A. the B. an C. a
—____—They’re English books.
—Do you know the girl ____ red?—Oh, she is my sister.