How do we say the number “4,135”?

Tom plays tennis very well and . [ ]

He didn’t make ______ clear when and where the meeting would be held.

Billy: I’ve been fixing the computer for over three hours, but it still doesn’t work. Nana: Why don’t you take a rest and try ? Maybe you’ll do better then.

.Mr Wang has an idea about our school trip. It sounds_________. We want to try.