16.—Don’t worry, Dad. The doctor said it was only the flu.

—      ! I will tell your mum there is nothing serious.

A. What a relief      B. Congratulations     C. How surprising       D. I don’t care

17. The pilot began a desperate race      time to land the plane before it ran out of fuel. Fortunately, he made it eventually.

A. over             B. against            C. for                 D. with

18. MSF is an independent organization      mission is to provide medical care to those affected by conflicts, epidemics or disasters.

A. which            B. when             C. where               D. whose