You are always saying that everyone should be equal，and this is _____________ I find too difficult to realize．
| A．why | B．where | C．what | D．how |
The life in that remote mountain village was so hard that many youngsters preferred to find jobs in the towns or cities, ____ they dreamed of starting their new life.
| A．by which | B．for which | C．at which | D．in which |
---- I’m sorry. That wasn’t of much help.
---- Oh, ______. As a matter of fact, it was most helpful.
| A．sure it was | B．it doesn’t matter | C．of course not | D．thanks anyway |
_____ computers are convenient to us in daily life, it may also cause other problems.
| A．Whether | B．Because | C．As | D．While |
Mistakes 
don’t just happen; they occur for a reason. Find out the reason, and then making the mistake becomes_______.
| A．favourable | B．precious | C．fundamental | D．worthwhile |
The plan just because people were unwilling to cooperate.
| A．broke down | B．pulled down | C．turned down | D．put down |