A number of graduates prefer to work in big cities , where there are lots of _______, like convenient transportation , more opportunities and better environment.

Thank you for all your hard work lastweek. I don’t think we ______ it without you.

I was about to inform you of the sudden change ______an unexpected visitor came.

________ did your uncle leave his home town.— Let me see. He _______ for nearly twenty years.

OK! Please come here and let’s talk _______ the pictures on the wall.