_____ what reason do you like this movie?[ ]

Why don’t you ask him for help? You _____ be good friends.— We have disagreements and we haven’t talked to each other for a long time.

The water in this river is harmful because It’s a ______ river.

Thanks _____ them, I found my Chinese roots.[ ]

The Internet is really useful to us. We can ________ find the information we need.