I find Physics is so hard for me that sometimes I want to stop learning it.
------How is the medicine for your mother? ------ It ________. My mother is much better now.
------Could you please tell me how to improve my spoken English? ------ Certainly,I ________.
You can ask him again if you like, but it won’t make any ________ — he’ll still say no.
My parents _________ TV from 9:00 to 10:00 last night.
Unit Six is ________ most difficult lesson, but it isn’t ________ most difficult one in this book.