She expressed ________to the teachers for helping her pass the College Entrance Examination.

— If you like I can do some shopping for you.— That’s very kind of you for your ______. 

The scientific research on how to protect the rare animals is ________. Many scientists are working hard to find new way to raise the animals by man.

 The manager decided to give the job to ____ he believed had a strong sense of duty.

There is no _________ to the house from the main street.