s said that Frank is very rich and is always changing his private cars .What is he–_______ of a manager, I am not sure.

Were you at school when it began to rain? —Yes. I withmy teacher at that time.

Only by imagining and creating ______ a difference in the future.

____ rapid transportation and communication,the whole world seems to be smaller．

Two years later, her father disappeared, never to be_________ again.