The red paper 后可以加is吗?

The red paper 后可以加is吗? Mother is p_____ on the red paper cuts on the windows and door. (the red ruler)( is) the (shortest)( of )the two改正其中一个括号怎样在比较级前可以加the? 复数论文paper可以加s么比如 the papers are 还是 the paper are there is the red is the hat red? this is 后加a pen 还是pen ,为什么this is paper可以不加?these are scissors可以不加?请说明一下冠词应在什么情况下加吧, The flower is made (.) paper who is the paper tiger? the water ___ turned red after Linda put the red paper into it. red paper clip trade His grangfather has a long white b________His grangfather has a long white b________Mother is p_______ on the red paper cuts on the windows and door The girl in red is her twin sister.其中in red加下划线,并对划线部分提问 The quilt is red(对red提问) ----- ----- is the quilt? （ ）there the red house?It is near the river前面加什么啊 the girl ( ) red is mary Is the boy()red yuo? where is the red house?