A.because | B.whether | C.because of | D.that |
A.where | B.which | C.in which | D.at which |
A.That | B.What | C.Why | D.How |
A.serve | B.that serving | C.that serve | D.serves |
A.who | B.whom | C.whoever | D.whomever |
A.when | B.where | C.that | D.which |
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