choose the correct adverb

1. The two planes came___close to each other
A.strongly
B.deeply
C.pretty
2.Within few seconds of taking off,the plane was___out of sight
A.completely
B.nervously
C.rarely
3.Our teacher is___respected by students and staff alike
A.incredibly
B.highly
C.positively
4.We___agree to the suggestions of the Board of Directors
A.well
B.totally
C.fortunately​