—Since you like the fur coat so much， why not buy it?—Well， I can’t afford ______ coat. 

—Credit cards are       useful when traveling.—True. They save us the trouble of taking too much cash.

 ------What do you think of our design for the new car？------Pretty good. But I find theirs is _____ worth considering and studying.

You can get off the bus one or two stops ________ and walk the rest of the way to work every day so as to take some exercise.

 —Have you finished your experiment report, Jane?—Oh, my God. I’ve _____ forgotten all about that.