—What do you think we can do for our aged parents? —You do anything except that you visit them as often as possible. don’t have to B. oughtn’t to C. mustn’t D. shouldn’t
28.The film is very humorous but_________can be enjoyed unless you understand English culture.
27.---Your composition is full of mistakes. ---I wish I_________more careful.
26.______life began on the earth is one of the biggest puzzles to scientists.
25.---Let’s throw a surprise party for mom’s 50th birthday. ---That’s a good idea. We________several of her friends.
24.________fit, we ought to learn more about our body and be careful with what we eat.