划线部分提问 There is a pen in the pencil-case.(划线部分是a)

划线部分提问 There is a pen in the pencil-case.(划线部分是a) 英语,对划线部分提问He has a pen in the pencil case.（a pen划线）对划线部分提问答语 1.There is a duck in the river.（划线部分提问,划线部分是a） There is a mouse in the house.划线部分是a mouse 对划线部分提问 划线部分提问 There is a little water in the river 划线部分是a little there is a pen.对划线部分a pen提问 There is a river in the mountain?的划线部分提问.划线的是 a there are three pens in my pencil case,对划线部分提问,划线部分是three,学霸 It is a pen .(对划线部分提问`划线部分是:a pen) 1.There is a little orange in the glass.(对划线部分提问,划线部分是a litt There is a knife in my pencil-box.对划线部分提问 This is ( a pen) in English ? 对划线部分提问