The bell ______ the end of the period rang, ______ ourheated discussion.

I’m sorry that I didn’t work out this problem——It’s ___________our abilityI didn’t work it out, too

Newton is known as a gifted scientist with very human weaknesses who stood at the point in history _______ magic ended and science began

I’ve studied growing plants as one of myinterestsCould I make some suggestions—_______

______I am concerned，the priceof the computer is much too high，so I can’tafford it.