Tu Youyou is the first Chinese _________ the Nobel Prize in Medicine for her work in developing effective drugs against parasitic disease.

In human, there is a possibility of____ such asfever and headachesif there is exposure to the virus.

Excuse me, may I take themagazine away —No, you ______. You______ only read it here.

The doctor looked over the woman carefully，but he couldn’t what was wrong with her．

an excellent student in our class, and she always herself in her studies.