问题补充:
this set of keys yours?
A. Are
B. is
C. am
D. Is
答案:
A. Are
B. is
C. am
(答案→)D. Is
解析:通过this set of keys “这串钥匙”可知,是一串,而不是多串,所以这里的主语应该是单数,所以应该用is ;又因为放在开头,所以本题选D.
时间:2019-03-30 14:43:10
this set of keys yours?
A. Are
B. is
C. am
D. Is
A. Are
B. is
C. am
(答案→)D. Is
解析:通过this set of keys “这串钥匙”可知,是一串,而不是多串,所以这里的主语应该是单数,所以应该用is ;又因为放在开头,所以本题选D.