The black pen is his.(复数)
The black pen is his.(复数)
The black bike is his 改为复数
His pen is --black (对线后提问)
His pen is(black).(对括号部分提问
the blue pen is( ),( )is black.
that is his pen变复数句
This is his pen.复数形式
is that his pen?改为复数
The color of her pen is black.
The pen is black 改为同义句
the pen is black it´s a black pen my.jacket is
the boy is crying his pen is?