A.I’m not sure | B.Well, it depends | C.That’s right | D.I’m afraid not |
A.we can; by | B.can we; for | C.we can; round | D.can we, against |
A.by when | B.since then | C.since when | D.by which time |
A.What great progress | B.How great progress |
C.What a great progress | D.How great a progress |
A.have they known, get | B.did they know, were going to get |
C.do they know, are going to get | D.had they known, got |
A.both of them | B.both of whom |
C.each of them | D.none of whom |
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