1 . Maria asked me ______ I had returned the books to the library, and I admitted that I hadn’t.

A．that

B．whether

C．when

D．where

2 . We are living in an age ________ online shopping is part of our daily life.

A．that

B．when

C．where

D．which

3 . They are in such a situation __________ everything is in disorder.

4 . --- It is ridiculous for people to only focus on the ring that didn’t light up during the opening ceremony in the winter Olympics in Sochi.
--I can’t agree more. we should concentrate our attention      the highlights are in the Games.

A．what

B．when

C．where

D．how

5 . Yesterday I went back to my primary school, ________ my teachers and I recalled our good old days.

A．which

B．that

C．when

D．where

6 . — Tom seems not so enthusiastic as he was two years ago.
— Yes. He’s really reached a point in his career ______ he has to decide what to do next.

A．that

B．when

C．where

D．which