----Many students don’t know how to stress and become worried.----I think they’better ask their teathers for help.
-- Is this eraser __________? --No, it’s not ________. It’s Jim’s.
--Thank you ___________ your English book. -- ____________.
-- ___________, is this your ruler? – Yes, it is. Thank you.
I don’t eat ice-cream. I don’t want ___________.
My keys ________in my schoolbag. This set of keys _______ Alan’s.