What _______ public is concerned about is whether medical workers and scientists will be able to find _______ cure for this new disease after the vaccine is tried on _______ volunteers.
all the animals I've ever had, these two dogs arc the most sensitive to the spoken word.
Studying Wendy's menu, I found that many of the items are similar toof McDonald's.
I made a promise to myself______ this year, my first year in high school, would be different.
No matter how bright a talker you are, there are times when it's bettersilent.
The development of industry has been_______ gradual process throughout _______ human existence, from stone tools to modern technology.