_______hard you try, it is difficult to lose weight without cutting down the amount you eat . 

—Is Paul playing basketball for his school?—Well,he ____.But he has given it up and switched to playing volleyball.

 This is the very knife _____ I used to cut apples yesterday.

I ______ along the road when I saw Peter. So we stopped and had a chat.

This summer, several provinces in the south of China was struck by floods, from ______effects the people are still suffering.