____ number of students in our class ____ larger than that in theirs.
| A．A, is | B．The,is |
| C．A , are | D．The , are |
Don't you recognize him? Just look up. On the opposite wall ________.
| A．does his photo hang | B．hangs his photo |
| C．is hanging his photo | D．is his photo hanging |
Whatever happens, Tom, ________ drugs.
| A．doesn't take | B．not take |
| C．not taking | D．don't take |
If a healthy environment is gone, ________ everything that our life depends on.
| A．so is | B．nor is |
| C．so does | D．nor does |
—Under no circumstances ________ the door to the Data Centre unlocked.
—I promise I'll be more careful in future.
| A．you need to leave | B．should you leave |
| C．need you leave | D．you should leave |
The drug used to treat this disease causes bad side effects, some of which ________ deadly.
| A．is | B．are |
| C．was | D．were |