Zhang Ming has learned English for two years, but he can ______ understand native speakers.
—Do you know that there are many different ____ animals in the zoo? —Yes, I do. And I also know that some of them are _____ scaring.
It _______ that the worker didn’t eat anything.
Many families form close friendship _______ the students and stay _____ touch with them.
—We’ve lived here _____2010. —So you’ve lived here ____about five years.
No one knows ____ in fifty years.