Time flied before we knew it! It is already 12 o’clock—Oh, really? I _______ it at all.[ ]

How unhappy your roommate looks!-Yes, but he is not willing to tell me what it is ________ is troubling him.[ ]

Would you like to go hiking with us tomorrow—Sure, ________ I am busy.

Why are you playing computer games again， Jim————Because I ______my homework and I want to relax.

I finished all my work today—If____, you can help others with their work