At last, we found ourselves in a pleasant ark with trees providing shade and _____ down to eat our picnic lunch.
The computer systemsuddenly while he was searching for information.
___ the room, the nurse found the tape-recorder ___.
As we joined the big crowd I got _____ from my friends.
Scientists have many theories about how the universeinto being.
Mr. Leea plan to reduce water pollution, which all the people present at the meeting thought highly of.