I found a set of（ ）选择 A.key B.keys C.t

I have two __ .A.set of keys B.set of key C.sets of keys D.s There is ( ) A.key B.a set of key C a set of keys D.keys 选哪个 a ,found,set,I,of,keys(连词成句） Gina found a set（）keys.A:in; B:on; c:of; D:for 是a set of keys还是a set of key? I found a set of______(key) A set of keys 今天老师跟我们说a set of keys后面用is,后来我们读了一篇短文是这样的：Found:A set of key I lost a set of keys.But last i found( ).填什么 Hello everyone,I have found a set of keys at 地点 a set of keys is on the sofa.(on the sofa部分提问）__a set of key I have a set of keys.(改为一般疑问句）