---Is your father at home?----No, he ________the USA.A. has been to B. has been inC. has gone to D. went to
— How _____ you , Miss Gao? — I ______ fine, thanks.
— Welcome to China! — _________ .
—Do I need to take any medicine? —Yes. _______twice a day.
My father came back home ______I was cooking in the kitchen.
The work of nurses is very important because they _____ the people.