1.     Niagara Falls form a ________________ border between the United States and Canada. (natural/naturally)

2.     Tourists visit this place ________________ (frequently/ frequent) .

3.     The Falls are very________________ (noisy/ noisily)

4.     So you must speak ________________ or nobody can understand you. (loudly/loud)

5.     Many years ago, the Iroquois tribe lived here________________ (peacefully/ peaceful)

6.     He is a ________________boy. (clever)

7.     He is tired because he has worked ________________. (hard)

8.     He isn’t tired because he has ________________worked. (hard)

9.     She is a ________________girl. (quiet)

10.She went to bed ________________. (quiet)