________ from the top of the tower, the Bird Nest looks like a big bird.
A dark cloud is a ________ of thunderstorm.
________ the Internet is bridging the distance between people, it may also be breaking some homes or will cause other family problems.
--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.