A.at | B.in | C.on | D.over |
A.on | B.in | C.at | D.for |
A.As soon as entered | B.When entering into |
C.On entering | D.Upon entered |
A.in case of | B.in the case of | C.in any case | D.in no case |
A.but for | B.except | C.apart from | D.besides |
A.over | B.across | C.away | D.down |
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