15.Although the two girls are twins, they are different in__________.
A. character
B. body
C. personal
D. characteristic
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16.“Do you know how much air is in that bottle?” “Oh, I haven’t the__________idea”.
A. last
B. less
C. least
D. little
17.His mother is ill, so there is no__________of his coming.
A. situation
B. question
C. possibility
D. problem
18.I had a__________of the soup to see if it was nice.
A. look
B. task
C. taste
D. feeling
19.You have so many apples. And I have nothing. Can you__________one of them for me?
A. spend
B. spare
C. sphere
D. share