Do you consider it any good _____ psychology?
Where she will go and when she will leave _____ what I want to know.
I find _____ difficult for us to master English if we don’t work hard.
The father as well as his three children ______ skating on frozen river every Sunday afternoon in winter.
Every possible means _______ been taken to prevent the river _________.
I read little now and I am always busy with my job. ________ my friend.