There are too many difficulties for us _______ . We really don’t know _______ to do.
Mrs. White showed her students some old maps __________ from the library.
The man in black is __________ my lifeguard. He is also my close friend.
My boss asked me if I __________ well with my new job, but I found it hard to respond.
__________ his father is? I don't know why he always wears the uniform.
Yi Jianlian, a promising new star, said goodbye to CBA for NBA and is ready to __________ in the world of basketball.