81.
The sun rises . . . . . . . . the east.

82.
There are national parks . . . . . . . . some parts of the country.

83.
He has been swimming . . . . . . . . one hour?

84.
Michael was abroad . . . . . . . . six years.

85.
They will be fighting . . . . . . . . political reforms.

86.
We sat . . . . . . . . the back of the classroom.

88.
The words in these books will be of value . . . . . . . . you.

89.
This paint will adhere . . . . . . . . any surface whether rough or smooth.

90.
What time did they arrive . . . . . . . . the hotel?