50 a
51 c
52 c
53 B
Those are correct
Declarative sentences would be the type of sentences because its telling something and every sentences ends with a period. (.)
<span>Studies show that symbolic play, commonly known as pretend play can help</span>
I believe the correct answer is exercitui.
You need the perfect passive form here, which is formed when you combine the verb esse in the present tense (here, sunt because of third person plural), and the appropriate participle in the same person, which in this case is exercitui - third person plural.
<span>Related forms </span><span>Expand </span> <span>inhabitedness, </span><span>noun </span> <span>uninhabited, </span><span>adjective </span> <span>well-inhabited, </span><span>adjective </span>
