6. People generally think that smoking is a bad ______ .
| A．custom | B．habit | C．behavior | D．Action |
The SAT is an excellent means of testing students. _____, it shouldn’t be only one of the many methods used.
| A．Therefore | B．And | C．However | D．Besides |
The drivers _____ about who was to blame for the crash for over 2 hours when the police arrived on the scene.
| A．have been arguing | B．were arguing | C．argued | D．had been arguing |
There are also those _____ hunting in fact offers a chance to prove themselves and risk death on purpose.
| A．who | B．from whom | C．/ | D．for whom |
The first 6 shortened classic novels will go on sale next month, with plans for 50 or 100 more _____.
| A．following | B．to follow | C．followed | D．to be followed |
Thousands of years ago, people killed the wild horse that lived around _____ food. _____ time, people began to catch and raise animals .
| A．for; Through | B．as; During | C．for; Over | D．on; Over |