TOEFL 5-9

supplement

• add

• carve

• be frank

• experiment

adjacent

• adjoining
• portable
• remote
• valid

suite

• apartment
• string
• complex
• transportation

limb

• arm
• group
• means
• mother

spine

• backbone
• timber
• expedition
• erosion

jot

• bit
• route
• diagram
• unity

tributary

• branch
• standard
• rigor
• breakthrough

sweep

• brush
• sum up
• diminish
• rush

axis

• center line
• condition
• the mass
• use of

invoke

• cite
• eliminate
• assume
• rid