为什么piano is a kind of musical instrument句中piano前不加the

为什么piano is a kind of musical instrument句中piano前不加the The piano is a kind of _____ instument. piano is a kind of musical instrument 还是the piamo is a kind of instrument sarry is a kind girl为什么用kind? Success is a kind of idea,getting rich is a kind o she is a kind 为什么 要加a she is kind 不行么? this （）animal is （）ugly.A、kind of kind ofB、a kind of a kind ofC、kinds of kindofD、kind of akind of 选哪个为什么呢? she is playing ＿＿ in the room.a.piano b.pianos c.the piano 选哪个为什...she is playing ＿＿ in the room.a.piano b.pianos c.the piano 选哪个为什么? ___ is piano lesson?It's at four o'clock.Jackie Chan is a great ____ ____ . Juice is a kind of drink.为什么不用drinks? Apple juice is a kind of ___(饮料)为什么 that's how a piano is like a drum.为什么用how susan is a beautiful girl ,but she is （）short A、kind B、kind of C、a kind of D、kinds of 为什么不选a cd呢, ___ is piano lesson?It's at four o'clock. this is a piano怎么变复数 Her hobby is piaying the piano?Her hobby is piaying the piano 还是 Her hobby is piay the piano?为什么? Which letter is kind of drink A M B O C T D X piano为什么直接+s o结尾应该+es