John thinks it won’t be long ______he is ready for his new job .
| A．when | B．after | C．before | D．since |
Research shows that though students benefit from having parents involved at school, _____ happens at home matters much more.
| A．which | B．what | C．that | D．whether |
________the letters there are answers written by people who are supposed to know how to solve such problems.
| A．Along with | B．Apart from | C．According to | D．Regardless of |
Children are excited about the approach of Christmas, _____ may bring great happiness to them.
| A．it | B．which | C．what | D．that |
_____ a piece of cheese cake my mum prepared---You won’t be disappointed!
| A．Trying | B．Tried | C．To try | D．Try |
Oh, boy, why are you just playing games all day? Can't you find something ______ doing at all?
| A．practical | B．valuab1e | C．worth | D．positive |