Nobody knows ______ in 100 years.
________ Tom ________ Mary speaks good Chinese, so they can communicate with these Chinese students very well.
----Dad, do you like my picture? ----_______________! It’s the nicest one I’ve ever seen!
---Good evening. I _______ to see Miss Lisa. ---Oh, good evening. I’m sorry, but she is not in.
Why not________your teacher for help when you can’t finish ________it by yourself?
The population of the world ____ still ____ now.