He didn’t listen to the teacher carefully.       , he couldn’t answer those questions.

We shouldn’t watch __________TV because it is bad for our eyes.

I was so tired that I could ______walk any farther.

–What do you think of Black Coal, Thin Ice?–It’s a good film.     , it is not suitable for teenagers.

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.