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
.---I’m afraid I can’t finish the book this week. ---___.
In order to ___ consumers, it’s extremely important to consider what information should be included in the advertisement.
. There is not much tine left and every minute _____.
Learning a foreign language calls for your memory, time, patience and emotions.____, it is not a simple thing.
--- Have you been here before? ---- This is the second time I ______to the Great Wall.