This dress still looks pretty on you, _______ it is out of style．
| A．but | B．though | C．since | D．unless |
—How long may I keep the book?
—You ________ keep it for two weeks.
A. may B. must C. will
The flowers smell ______.
A. well B. badly C. good
Mrs. Smith has _____ son and a daughter.
A. a B. an C. the
Bob is _________ than John.
A. tall B. taller C. tallest
—What are _______ teachers doing?
—They are having a meeting.
A. this B. that C. those