_____the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.
If they _______ what I was saying, they'd know what I was talking about.
He ______ the math problem, his classmates wanted to help him out.
The little girl ________ to be a good singer if she gets good training in a music school.
I tried to ______ in my speech we were all grateful for his help.
Buses have routes. They ________ and ________ people at different places on the routes.