A.more and more rich | B.more rich and more rich |
C.richer and richer | D.richer and richest |
A.difficult | B.much difficult | C.more difficult | D.the most difficult |
A.serious, serious | B.seriously, seriously | C.seriously, serious | D.serious, seriously |
A.hotter; hottest | B.hot; hot | C.hotter; hot | D.hot; hotter |
A.so long as | B.as longer as | C.longer than | D.not as longest as |
A.larger | B.most | C.smallest | D.largest |
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