Answer:
a ) 10 : 3
b ) boys = 
girls
Explanation:
total number of students = 78
number of boys = 60
number of girls = 78 - 60 = 18
ratio of boys to girls = 60 : 18 = 10 : 3
A would be the answer, Tomas was frustrated during class he forgot his book report. I believe there should be a comma in between class and he
B,makes more sense especially if you asked a question in the first paragraph!
Answer: In an inverted sentence, the predicate is placed before the subject/noun.
The correct answer is D, this is 'present perfect' tense. It is formed with the use of the verb HAVE in present simple tense (so, HAVE/HAS), and the past participle of a verb (or the third column of irregular verbs).
A cannot be correct, because then it would say - I hear.
B cannot be correct, because then it would say - I had heard.
C cannot be correct, because then it would say - I heard.
And since there is also HAVE HEARD, the correct answer has to be D.
