There is a swimming poolin our school这为什么是定语从句．先行词是什么?

There is a 20-metre-long swimming pool there.The swimming pool is ()()() There is a boy___there.A.swim B.swims C.swimming There is a boy ___ in the riverA swimming B swim C swims D is swimming there is a d( ) swimming in the river Is.there.a.swimming.pool.in.your.school B_____the building there is a swimming pool.填空 there is a swimming pool near school 还是 there is a swimming pool near the school?我认为是后者 Do you think( )there is dangerous?A.swimming B.swam C.swim D.swimming There is a new swimming pool_______Swan Lake Swimming Centre.横线上填什么 There is also a 50-metre-long swimming pool 同义句=The swimming pool is ( ) ( ）（） there is a swimming pool near here,I often go there to swim 对吗 is,a swimming pool,there,in good,our,city (连词成句） a swimming pool 是连着的 选择为什么不选A?the teacher with his students______over there?A are swimming B is swimming 我们市中心有一个游泳池 There is a swimming pool我们市中心有一个游泳池There is a swimming pool 一一一一 our city. Swimming there is dangerous 这句话对么? Is there a swimming pool near your home?改为复数形式 there is a big swimming pool in our school的主谓宾 is,a swimming pool,there,in,good,our,city,(连词成句)