I want to show you is my gratitude andrespect for your continuous and selfless help.

so many scientists in thisfield, he ______ and achieved great success.

15．You may ________ the textbook if you don’t know the answer to the question.

The man as well as his horse ____ crossed the river ____ from Tokyo.

If I find someone who looks like the suspect, my _____ reaction will be to tell the police.[ ]