You can watch TV ______, but you can’t watch it ______ a long time.
My grandmother found watching TV _________ but I enjoyed it very much..
Beijing ________ a lot over the years. Now it has become one of the biggest ______ in the world.
The music is great because you can sing along _________.
If you are an outgoing boy, you will have _________ friends.
The song reminded me________ an experience I once had.