A they are on B it is on C they are in D it is in
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C和D都对.in progress意思是"在进行中,在进展中".the Olympics 可用作单数,也可用作复数."while they are in progress/while it is in progress"这里的they和it均指olympics.在举行奥林匹克运动会期间,经常有关于奥运会的一些的报道.
A they are on B it is on C they are in D it is in
C和D都对.in progress意思是"在进行中,在进展中".the Olympics 可用作单数,也可用作复数."while they are in progress/while it is in progress"这里的they和it均指olympics.在举行奥林匹克运动会期间,经常有关于奥运会的一些的报道.