—I've got a headache.
—No wonder.You in front of the computer too long.
A:work
B:are working
C:have been working
D:worked
下列各句中,没有语病的一句是( )
下列矿物中,能在所有物体上刻划出痕迹的是( )
选出下列词语中划线字音形完全正确的一项( )