When I try to understand ________ that prevents children from getting fat, it seems to me that there are two reasons.
| A．why it is |
| B．what it is |
| C．why is it |
| D．what is it |
The new bridge is ____the one built last year.
| A．three times as wider as | B．three times the width of |
| C．three times the width | D．as three times as |
Jim , as well as his friends who ____football games, ___traveled with the team .
| A．likes; has | B．like; have | C．like; has | D．likes; have |
----I was riding along the street and all of a sudden, a car cut in and knocked me down.
------You can never be _____careful in the street.
| A．much | B．very | C．so | D．too |
In the past few years, My Heart Will Go On was a popular song among young people, _____were often heard singing it at parties．
| A．who | B．which | C．they | D．that |
---I regret _____you John has been fired．
---I can hardly believe my ears．He’s such a fine worker．
| A．telling | B．having told | C．to tell | D．to have told |