They usually have the medicine_______before putting into the market all over the country

Although he was ____________ my opinion, the old professor didn’t come up with his own.

If you ________ your attention on the jobin hand, you’ll soon finish it.

Are you satisfied with the result? -Not at all．It couldn’t be _______ . [ ]

As a volunteer ,Guo Mingyi ______always _____help otherswho are in trouble .