It is thoughtful ________him ________hisCDs for us.　 playing

There is _______ art room in the school. _______ art room is very clean.

Trains with the first letter D or Z can run __________ a speed of more than 200 kilometers an hour when it travels __________ the desert

I’d rather ____ on the land ____ in afactory

I never blame failures－there are too many complicated situations in life, but I ammerciless(无慈悲心的) toward lack of effort