1 . They didn’t ________ (料到) seeing such an open country and were truly amazed. （根据汉语提示单词拼写）

2 . We need to know the customs of a country so that we do not_________(使尴尬)others.

3 . Though they are twins, they don’t r________ each other in appearance or nature. (根据首字母单词拼写)

4 . Following the guide, we went into a house; ________ wall hung a picture of Einstein.

A．on its

B．on whose

C．on that

D．on which

5 . _________ many times, but Mary didn’t know how to use the computer.

A．Having been taught	B．Having taught
C．She was taught	D．Though she was taught

6 . Having been attacked by terrorists, ____________________     .

A．the tall building collapsed

B．doctors came to their rescued

C．an emergency measure was taken

D．warnings were given to tourists

7 . ______ along the quiet road at forty miles an hour, and then an old man suddenly started to cross the road in front of me.

A．Driving	B．Having driven
C．I was driving	D．When I was driving