A.occasion | B.case | C.situation | D.background |
A.are | B.is stayed | C.is | D.are left |
A.fixed | B.fixing | C.fix | D.to be fixing |
A.eventually | B.constantly | C.occasionally | D.frequently |
A.free | B.vacant | C.handy | D.convenient |
A.interested; interest | B.interesting; be interested |
C.interested; be interesting | D.interesting; interest |
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