( ) 28. Things fall to the ground _______ go up into the air because of gravity.
--The English exam is not difficult, is it?--________. Even Tom ________ to the top students failed in it.
London is a most beautiful city, ________ the River Thames.
Great ________ should be made to speed up higher education to meet the needs of industry and agriculture.
With the country’s population reaching 1.6 billion in the mid of this century, most of China’s rivers, including the Yellow River, ________.
--How did you find the film Harry Potter and the Deathly Hallows?--________. I can’t think too highly of it.