As is known to us, theory is based on practice and servers practice.A. by chance B. in turn C. in return C. by turn
Pop music is loved by lots of people,but it is not to everyone’s _______.
—What’s the matter,doctor? —Nothing serious.Take this medicine according to the __________,and you’ll get better soon.
Not __________,the process of wedding ceremony varies widely from culture to culture.
He kept all his letters in a __________ box.
The task is too much for me,so I cannot carry on __________ any longer.I must get some help.