问题补充:
— the team finished most of their research work?
—Yes, but the rest rather difficult.
A. Has, are
B. Has, is
C. Have, are
D. Have, is
答案:
A. Has, are
B. Has, is
C. Have, are
(答案→)D. Have, is
解析:考查主谓一致。the team指代的团队的所有队员,故谓语动词用复数。the rest指代上句中的research work,为不可数名词,故用单数。选D。