He has made another wonderful discovery,___ of great importance to science.
—You see, I’m poor in maths, you are not good at English, and... — That’s ____ we should help each other.
Gary Locke , a Chinese-American , once______ as the governor of Washington for 8 years and now is U. S. Commerce Secretary.
When people talk about the scenic spots in Anhui, the first _____ comes into mind is the Yellow mountain.
My father gives me five hundred yuan a month which I think can____ all my expenses.
______the doors were closed and that all the lights were off, the boy left the classroom.