Maybe you have been to many countries, but nowhere else _____ such a beautiful palace.

Did you ____ your homework—No, I didn’t ____ it this afternoon.

Recently a debate about ___ is real beauty has been raised．People are pushed to think some questions like ___ is better, artificial beauty or natural one

We should save energy by _________ the lights when we leave a room.

If you’refree tonight, how about having dinner together—.