Unit 1
textbook · conversation · aloud · pronunciation
Unit 3
rush · suggest · pass by · staff
Unit 4
require · European · African · British
Unit 5
no matter · local · brand · avoid
Unit 6
mention · accidental · by accident · ruler
Unit 7
Roy · Whitcomb Judson · Ruby · Thomas Watson
Unit 8
wolf · uneasy · laboratory · outdoors
Unit 9
war · stick · stick to · down
Unit 10
noon · mad · get mad · effort
Unit 11
lately · be friends with sb. · leave out · friendship
Unit 12
oversleep · give ... a lift · block · in line with
Unit 13
advantage · cost · wooden · plastic
Unit 14
row · in a row · keyboard · method