Pine trees, of which there are almost one hundred ____, are found throughout the North Temperate Zone.
A. species B. samples C. specimens D. Standards
The salmon dish was _______, wasn’t it?
A. success B. the success C. a success D. successes
The conference had been held to discuss the effects of tourism ___ the wildlife in the rainforest.
A. in B. on C. at D. with
Specialists may be useful to _____ a situation and suggest solutions.
A. analytical B. analyze C. analysis D. analyst
Problems _____ because they were lack of communication.
A. raised B. rose C. arose D. aroused
While he was ______ about in the street, Mary came up to him.
A. wandering B. wondering C. wondered D. wandered
