【题目】Look at my sweater. ______ very nice.( )
A. They are
B. It is
C. It has
【答案】B
【解析】
句意:看我的毛衣。它很漂亮。A它们是,B它是,C它有,根据单数名词sweater可知,主语用it代替,该陈述句是主系表结构,因此需要be动词is,故选B。

【题目】Look at my sweater. ______ very nice.( )
A. They are
B. It is
C. It has
【答案】B
【解析】
句意:看我的毛衣。它很漂亮。A它们是,B它是,C它有,根据单数名词sweater可知,主语用it代替,该陈述句是主系表结构,因此需要be动词is,故选B。