Barron's TOEFL A-3

Adjective unclear because a choice between alternatives has not been made
Palin has remained ambiguous about her 2012 presidential intentions, telling Fox Business News that she is "months away" from a decision.
Adjective disturb or bother (a person) in a way that displeases or irritates
It all started with Paparazzo, a not-so-pleasant photographer in the 1960 film La Dolce Vita. The Italian word paparazzo refers to the annoying buzz of a mosquito.
Noun feature that increases attractiveness or value
Many illegal settlements in India have grown into bustling districts more populous than many American cities, yet lacking amenities and legal protections, and residents face the perpetual threat of eviction.
Adjective enough or more than enough
The billionaire’s will included $12 million to her dog Trouble. A judge, in an amendment, changed the amount to $2 million, still ample for the dog to live an opulent life.
Verb study closely and carefully
Mississippi is using technology to battle cheating on the state's end-of-year exams. The tech, developed by Caveon, analyzes answer sheets by computer and flags anomalies.
Adjective dating from very long ago
This wonder megalith was discovered by a straying sports diver. Soon other ancient specimens were found, likely dating earlier than the start of the Egyptian civilization.
Verb guess or be aware of (what will happen) and take action in order to be prepared
The organizers of any huge sporting event have to anticipate trouble and try to stop it before it starts. Security officials at Tampa's Raymond james Stadium hoped to do so by using machines that recognize faces.
Adjective no longer used
Quick Response codes, used to share information, could become antiquated before they catch on, with complaints that the codes are too Byzantine for too little reward.