The answer is B, because we are learning about the national air and space museum, not the there museums.
        
             
        
        
        
<span>d. object of a preposition
</span><span>All entries will be distributed for judging
GERUND - .</span>object of a preposition
NOT:
a. predicate nominative
b. direct object
<span>c. subject</span>
        
             
        
        
        
<span> A pencil sings a song about not having any work to do, paper to write on,
</span><span>or enough lead to make his mark in the world.
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To determine if someone talking is telling the truth, watch for body language. IF the person is fidgeting, keeps looking away, or stumbles upon their words, there is a high possibility they aren't telling the truth. 
Ask yourself if what they are saying is possible or makes sense