—I saw your uncle take a taxi to the airport. Why didn’t you drive him there? —I __________. But my car ___________ .
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.