1 . ________ felt so good to have a proper conversation with my friend for over two hours, without being distracted by messages from other people.

A．What

B．As

C．I

D．This

2 . I still remember the accident and the troubles ______has caused to me.

A．which

B．what

C．it

D．when

3 . Mr. and Mrs. Scott prefer a restaurant in a small town to ______ in so large a city as New York.

A．this	B．one
C．it	D．that

4 . My close friends，after they heard about my experiences in South America，________ said it was totally out of their imagination.

A．which	B．them
C．all	D．who