27．What do you think of his suggestion ______ we organize a football club?                   

26．— How is the campus cleaning going?                                              
— We've cleaned it up, ______ at least most of it．                 

13．Being a good listener is a kind of quality and that’s ________ it takes to keep friendship.

33. You can, __________ the sky is clear, see as far as the old temple on top of the mountain, but not today.  

20. It was already 11 o’clock in the evening_____they arrived at the hotel.

13.______studying abroad can be hard, it can broaden your understanding of the word.

______ the stage design was terrible, the special effects were disappointing.

12. Your friend acts ______ he were a trustworthy person but as a matter of fact he seldom keeps_____. So remember not to trust him with anything important.
A. as if; his words         B. as though; his word  
B. even if; his promise     D. even though; his promises

32．_____ you have a healthy diet, you can reduce its benefits by bad eating habits．

26．______ some teenagers don’t realize is _______ difficult life can be after they get addicted to drugs．