13. The students must have obeyed their teachers.

a)Their teachers might have obeyed by
the students.
O
2)Their teachers might have been
obeyed by the students.
O
3)Their teachers must have been obeyed
by the students.
O
4)Their teachers must have obeyed by
the students.​

The answer is 3

Explanation:

A is automatically out ruled because "might" contradicts the "must" in the sentence above.

2 Also contradicts the "must" in the sentence above.

3 Does not contradict the "must" and makes grammatical sense. Therefore, 3 is the answer

4 Doesn't contradict the *must" but does not make grammatical sense.

answer: a

explanation:

read the following excerpt from “greece” by oscar wilde.

the sea was sapphire [colored], and the sky

burned like a heated opal through the air;

we hoisted sail; the wind was blowing fair

for the blue lands that to the eastward lie.

which words does the poet include to the reader visualize the scene?

“the sea was sapphire”

“through the air”

“was blowing fair”

“to the eastward lie”