Except on official such as formal receptions, American society has a certain amount of informality.
| A．cases |
| B．situations |
| C．conditions |
| D．occasions |
“You were tired, weren’t you?” “Yes, but ___.”
| A．very | B．very much | C．a little | D．little |
The factory is said __with modern instruments ___ from America.
| A．to have equipped, to have introduced | B．to be equipped , introcuced |
| C．to have been equipped, having been introduced | D．having been equipped, having been introduced |
You may go out ___ your work is done.
| A．unless | B．except | C．until | D．as |
He had promised to come and help us, and ___.
| A．so did he | B．so he did | C．so had he | D．so he had |
I don’t have time to come to your house, but I could ___ at the end of the street.
| A．pick up you | B．pick you out | C．pick you | D．pick you up |