31

 terrestrial , hazardous , etch , rare , duration

 5

 151

 Toefl

 32

 apt , convey , ominous , fuel , dwindle

 5

 138

 Toefl

 33

 tangible , infectious , certain , recorded , chaotic

 5

 173

 Toefl

 34

 extraneous , encroachment , boom , span , dwarf

 5

 164

 Toefl

 35

 irreversible , certainly , configuration , fast , transition

 5

 211

 Toefl

 36

 pregnant , unbridled , subsist , anchor , shred

 5

 169

 Toefl

 37

 drive , integrate , profuse , influential , execute

 5

 173

 Toefl

 38

 prior , drawback , implement , utilize , imaginative

 5

 201

 Toefl

 39

 jeopardize , foremost , relatively , asymmetric , devouring

 5

 230

 Toefl

 40

 obsolete , hollow , predominantly , comparable , incorporate

 5

 219

 Toefl