1. what should be added when an adverb begins a sentence?
a. an exclamation mark
b. a comma
c. a period
d. a semicolon

2. the comparative form of adjectives compares
a. at least a dozen different items.
b. two things or people.
c. more than two things or people.
d. the past to the present.

this is incorrect

explanation:

this is false

answer: dinner and a movie with your friends this saturday night.

opportunity cost refers to the benefits that a person or business misses out on when choosing one alternative over another. opportunity costs are easy to miss, but they can be important for decision-making. in this example, the alternative that the person will miss out on is the opportunity to have dinner and watch a movie with friends on saturday, as he will have no money left after buying the cd.