—Have you handed in your school-work yet?

—Yes, I have. I guess it          now.

A．has graded

B．is graded

C．is being graded

D．is grading

患者，男，45岁，会计。双眼涩痛不适时轻时重半年。现双服碜涩畏光、流泪、不耐久视。体查：裸眼视力0．6(双)，矫正视力1．2(双)，双眼白睛少许赤丝细脉，睑内面轻度红赤，黑睛隐见细点状星翳；伴咽干舌燥，舌红苔薄少津，脉细无力。