[单选] After________you have told me I think you should see a doctor
A . that B . what C . which D . if
John________ he could improve his exam results, but he did not have enough time to study． knows how。 knows that。 knew how。 knew that。
How can he do so much work? He ________ stay late at the office every evening and take work home at weekends． need。 can。 might。 must。
After________you have told me I think you should see a doctor
