They arrived here . A.since a week ago B.a week ago C.for a week D.next weekThey arrived here . A.since a week ago B.a week ago C.for a week
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![They arrived here . A.since a week ago B.a week ago C.for a week D.next weekThey arrived here . A.since a week ago B.a week ago C.for a week](/uploads/image/z/8623649-65-9.jpg?t=They+arrived+here+.+A%EF%BC%8Esince+a+week+ago+B%EF%BC%8Ea+week+ago+C%EF%BC%8Efor+a+week+D%EF%BC%8Enext+weekThey+arrived+here++++++++++++++.+++++++++++A%EF%BC%8Esince+a+week+ago++++++++++++++++++++++++++++++B%EF%BC%8Ea+week+ago++++++++++C%EF%BC%8Efor+a+week)
They arrived here . A.since a week ago B.a week ago C.for a week D.next weekThey arrived here . A.since a week ago B.a week ago C.for a week
They arrived here . A.since a week ago B.a week ago C.for a week D.next week
They arrived here .
A.since a week ago B.a week ago
C.for a week D.next week
They arrived here .
A.since a week ago B.a week ago
C.for a week D.next week
呵呵...请给出为什么选这个答案的理由.
They arrived here . A.since a week ago B.a week ago C.for a week D.next weekThey arrived here . A.since a week ago B.a week ago C.for a week
B.a week ago
They arrived here 时态是一般过去式,所以用过去的时间状语
ago通常做时间状语用一般过去
A.since a week ago 完成时
C.for a week 完成时
D.next week 将来时
这是选B