30. Chinese food always gains ____________ from people all over the world.
If ____ in, the viruses can result in illness or even deaths.
Standing inside ____ lots of strange creatures with white skin and large black eyes.
—I have been waiting for you so long. —Sorry, I have been in the library, _______ my friend look for some books.
I think humour is a vital form of entertainment, ____ it makes us laugh and laughing keeps us healthy.
The UN is an important international organization _____helps many people around the world.