—Well, you've come back! ________ did you stay in Shanghai? — For about seven days. I really enjoyed myself.

Sometimes we can hardly understand foreigners because they speak too _______. 

—_______ do you usually go to school?— On foot. 

--- Have you _________ chatted with your friends on the Internet?--- No, ________.

--I am often weak and tired when I work. -- _________ you have too much pressure. You’d better relax.