What wonderful music!—Thanks. Neither my classmates nor my mother ______ the piano better than me.

Stop! You can never touch this machine when it ________, it is very dangerous

Tom helped us settle down in this new city,is very kind of him.

Do you still remember when we went to Australia–I can’t remember now but ______ sometime last winter

What we really concern is _____ those orphans can recover from the earthquake psychologically.