There's a sign ___(ask)for dancing lesson

There's a sign ___(ask)for dancing lesson There's a sign "No Smoking".Sorry,I ___ it. 是dancing lesson要加s或者a吗 look at that sign .yes,there's a camera.______it mean we ___ My mother is singing.I am dancing ___ my mother's song.A,for there's ___ with my watch .please ask tom .he has a gold wat We have a dancing lesson的意思 为什么是a dancing lesson而不是dance lesson? There's a l___ water in the bottle.you can ask for some to d Look( ) that sign. Yes,there’s a( ) ( )i There's a sign on the wall 意思 There's a sign on the wall (复数句）