Our class is made up of 54 students, _____ are girls.

I can never forget the days _____ we worked together and the days _____ we spent together.
A. when; which    B. which; when    C. what; that    D when; when     

The users of this new mobile phone can check e-mails _____ they happen to be.

It’s a common scene now in Chile that families cry helplessly over_____is left of their homes．

You should explore your talents so us to find out ______ your real interests lie．

My dog made a mess in the living room, ______ really annoyed me．

It is still unclear ______ the little boy got the CD player to work．

He raised his voice, ______ we still couldn’t hear anything．

________makes this shop different is that it offers more personal services .

The owner of the cinema needed to make a lot of improvements and employ  more people to keep it running, _______ meant spending tens of thousands of pounds.