16. —I’ve got a scholarship to study in the USA for a year.

—_______. You deserve it.

A. I can’t make it.                         B. I’m happy to hear that.

C. Take your time.                       D. All the best.

17. —Am I bothering you?

—No. _________, I like you to accompany me.

A. In a nutshell                         B. On the other hand

C. In the end                            D. On the contrary

18. ____ to nuclear radiation, even for a short time, may influence genes in human bodies.

A. Having exposed                        B. Being exposed

C. To expose                         D. Exposed

19. In order to lose weight, the young lady prefers to ______ regularly rather than take expensive weight-losing pills.

A. work out              B. leave out        C. hang out         D. figure out