It was not until the subprime loan crisis(次贷危机) ____ great damage to the American financial system that Americans ____ the severity of the situation.
It is no______arguing with Bill because he will never change his mind。
Her question was so difficult that I could hardly make any ____ of it at all.
--- Have you thought of the topic for the composition? ---Not yet, I _______ it very carefully, but I haven’t decided.
With the weather getting colder, visitors from Australia spent their _____ days in Beijing.
----I didn’t pass the English exam. ----____ next time, and you’ll succeed.