Evidence has been found through years of study_____children's early sleeping problem is likely to continue when they grow up.
| A．why | B．how | C．whether | D．that |
She has tried her best, so please don’t be too ____ about her job.
| A．practical | B．special | C．responsible | D．particular |
The Group of Eight (G8) ______ the richest eight countries in the world.
| A．is consisted of | B．consists of |
| C．is made up | D．is composed with |
He’s only too ready to help others, seldom, _____ refusing them when they turn to him.
| A．if ever | B．if never | C．if not | D．if any |
______, the conference began.
| A．The candidates having taken their seats |
| B．The candidates had taken their seats |
| C．Taken their seats |
| D．Taking their seats |
--- Can I smoke here?
--- Sorry. On no condition_____ in the library.
| A．smoking permits; | B．smoking is permitted |
| C．does smoking permit | D．is smoking permitted |