As it turned out to be a problem of no importance , we so much time looking into it .
| A．needn’t spend | B．didn’t have to spend |
| C．needn’t have spent | D．oughtn’t to spend |
Teenagers are often treated like _____bigger children, but they are old enough to be
independent.
| A．slightly | B．lightly | C．extremely | D．obviously |
“Youth” is regarded by many people as a time in their life _____ fun, passion, and imagination seem limitless.
| A．that | B．which | C．when | D．where |
Celine Dion9 who performed wonderfully at the Spring Festival Gala, is _____as she was 15 years ago.
| A．as attractive a star | B．as an attractive star |
| C．attractive as a star | D．as attractive star |
_____，memories of staying abroad as an exchange student flooded into his mind.
| A．Listening to these songs |
| B．Having listened to these songs |
| C．He was listening to these songs |
| D．When he listened to these songs |
You had better book rooms at the hotel in advance _____you should find no room on your arrival.
| A．so that | B．even if | C．in case | D．now that |