If my frirends have any problems, my door is ______ open to them.
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.
—What a beautiful sweater! How much did you _____for it?—198 yuan.