Green products are becoming more and more popular because they are environmentally _________．

friendly

various

common

changeable

What surprised me was not what he said but _________ he said it．

the way

in the way of

in the way

the way which

I couldn’t _________．The line was busy．

go by

go around

get in

get through

Please tell me how the accident _________．

came by

came upon

came to

came about

The customer bargained with the shopkeeper for a long time, and finally they agreed _________ the price．

to

with

on

at

He didn’t go into detail on the subject, he spoke _________．

in general

in particular

in common

in short

With a lot of difficult problems _________, the newly-elected president is having a hard time．

settled

settling

to settle

being settled

The manager, _________ his factory’s products were poor in quality, decided to give his workers further training．

knowing

known

to know

being known

I have a _________ idea of how a car works．

common

general

usual

ordinary

The boss had his workers _________ all day long．

working

work

worked

works