what's the quantity you need for this product?语法对吗

what's the quantity you need for this product?语法对吗 what's the quantity you need? Persistance is what you need to do everything well.这句话语法对吗?w you need the tranquilizer gun for this mission是什么意思 What do you need for... it's like this it's like that.this what i need from you .hol 英语翻译What's the word for this in English?请问这个句子的语法结构是怎样的? What's the difference between quantity demand and demand? what's the English for this对,还是what's the English for it对? You have 3 credits left for today (what's this?) May I know what does this stand for 这句语法对吗? what 作为疑问从句应该怎么用 our demand for this product is steadily the increase