Scientists ________ in their opinions of how snow crystals originate.

A. difference B. differ C. differentiate D. differentiate

the goal seems __________, I believe we should begin at once,” Tim argued.

A. achievements B. achieve C. achievable D. achieving

The meeting was ____________, and all left satisfied.

A. harmony B. harmoniousness C. harmonious D. harmonize

When the automobile salesman described the car so _________, we became very uneasy about buying it.

A. ambiguity B. ambiguousness C. ambiguous D. ambiguously

He spoke ________ to her, and she began crying immediately.

A. insensitivity B. insensitiveness C. insensitively D. insensitive

Sport is sometimes used by governments as a tool of foreign _________.

A. political B. policy C. politics D. politician

The love for books is helpful in _________the pupils’ knowledge.

A. developing B. development C. developed D. being developed

How _________!

A. the room is dirty B. is the room dirty C. dirty the room is D. the dirty room is

What_________!

A. an exciting story B. is an exciting story C. a story exciting D. the exciting story

She is _______ to understand the matter.

A. enough intelligent B. so intelligent C. intelligent enough D. very intelligent