How can you expect to learn anything _____ you never listen?
| A．in case | B．even if | C．unless | D．when |
The illness from which Mary is suffering has now been _____ as hepatitis （肝炎）.
| A．diagnosed | B．determined | C．deduced | D．discovered |
If the boy had _____ the dog alone it wouldn't have bitten him.
| A．set | B．left | C．had | D．put |
The generation _____ makes it difficult for parents to understand their children's opinions.
| A．division | B．gap | C．separation | D．interval |
Despite their good service, most inns are less costly than hotels of _____ standards.
| A．equivalent | B．uniform | C．alike | D．likely |
He was afraid that the branch might bend over and break, and he would be sent _____ to the ground.
| A．crashing | B．throwing | C．rushing | D．dropping |