We don’t know when next week. Please call me when he arrives.

It’s the most _____ thing I have ever heard in my life. I can’t help laughing.[ ]

With many troublesome problems, such as unemployment and crime, 　　　　, the new mayor seems to be at a loss.

－What is your New Year’s __________－I am going to study harder.

It was only after he had read the papers _______ MrGross realized the task before him was extremely difficult to complete