________warmly for his excellent work，the model worker was too _______ tofall asleep．

What a nice MP5! Whose is it— It’s____ . My father bought me last week.

I feel really guilty because I _______some cruel remarks on my best friend.

Jack can’t concentrate on his lessons recently. —Yes, that might______his low score in the last test.

Do you know which is______ longest river in the world