—Has your father returned from Europe yet?—Yes, but he ______ here for only three days before his company sent him to America.
The Professor considers ____ no good _____ without understanding.
---I'm sorry I made a mistake!--- _____. Nobody is perfect.
Word spread across the country __________ the former first lady planned to run for the next president election.
On November 11, the so-called double 11 shopping carnival, his mother spent a lot in buying clothes __________ his father bought tens of latest digital devices.
Among the forests _________ a newly built wildlife research center.