—I just can't stop worrying about the result of my medical examination.—＿＿There’s nothing

问题补充：

—I just can stop worrying about the result of my medical examination.

—＿＿．There’s nothing you can do now but wait.

A. Sit back and relax

B. Watch out for it

C. Just a moment

D. Take your time

答案：

(答案→)A. Sit back and relax

B. Watch out for it

C. Just a moment

D. Take your time

解析：此处Sit back and relax 休息一下；Watch out for it关注它；Just a moment等一会；Take your time慢慢来。句意：— 我一直担心我的医学考试结果。— 别着急。现在你只能等，没别的办法。根据句意选A。