I don’t know if his uncle ________. — I think he ________ if it doesn’t rain .

Starting your own business could be a way to achieving financial independence___; it could just put you in debt

I ____ Mr. Smith since he moved to Shanghai.

Could I swim here—____________. Look at the sign NO SWIMMING.

Are you two old acquaintances —Yes, we _____ in the same neighborhood for quite along time, though he went abroad with his family at 14.