–Why, David, you look so tired! –Well, I ______ a report for the whole day and I must finish it tomorrow.
Bats are surprisingly long-lived creatures, some _____ a life span of around 20 years.
-So you gave Mary your dictionary? -______.She said she'd return it to me when she could afford her own.
The government has taken measures to______the high prices of daily goods to keep the market stable.
It ______ we had stayed together for a couple of weeks ______ I found we had a lot in common.
-Don't forget to return the book in two weeks. -______.Don't worry about it.