下面这道题选哪个答案,说说原因,
问题描述：
下面这道题选哪个答案,说说原因,
Much of the homework of online schools is still completed in the old-fashioned way,with students ________ at a desk with a pencil and paper.
A.seating B.seated C.to seat D.seat
答
B
sb is seated at a desk
因为这是with 结构 所以省略 is