I have a set of k_________

There are a set of k___ in the case I find a set of k___ in the room.His English book is l____.RT这是1个连句` 还有I have a set of (key). 改错 I have a set of key. I have a set of k_________ As a students,we have different k___ of rules I have a set of keys 根据a set of keys 提问? I have a beautiful set of tea cups.这里为什么用set of,做什么用? I have a set of keys.(改为一般疑问句） I have two __ .A.set of keys B.set of key C.sets of keys D.sets of a half k___ of apple 填什么 i might k___ a pet dog I have a set of ___（钥匙）.Jim and Tony ___(是) good friends. I have a set of k __根据句意和首字母提示填空 I don't like this k___ of movie 填空题I don't like this k___ of movie填空题 A group of scientists _____ the west of the country.A.have set off B.have set out for C.have set off for C,set out I heard you've got a set of valuable Australian coins,___I have a look?A may B shall a beautiful set of tea cups 什么意思?I have a beautiful set of tea cups.You can get a good cup at Lucy’s Café.这两句怎样理解?什么意思?这里的set 是什么意思