e opened the box, it ____________ a bad smell

Although you have lots ofdifficulties, you must _______your work.

As you may have found, the Chinese language is ______ in idioms and proverbs. –Yes, I often get ______.

I thought I had made a good preparation.—You are dreamingThe fact is that you at the beginning.[ ]

n as his teacher begins lecturing, he begins todoze off, not intentionally but _____.