Answer:
a. Let me sing a song, will you?
b. I have read your book.
c. When does our school start?
d. She usually designs buildings.
e. The teacher told us that water freezes at 0°C.
f. People are killing tigers indiscriminately. or Somone is killing tigers indiscriminately.
Step-by-step explanation:
The given sentences are changed according to the required instructions in the brackets as follows-
a. Let me sing a song, will you?
A question tag refers to the use of a question at the end of a statement.
b. I have read your book.
An affirmative sentence is a statement that is positive.
c. When does our school start?
The "wh-" question is asking a question that starts with a "wh-" type of word.
d. She usually designs buildings.
Here, the verb "designs" is used in the singular, present tense for the singular subject "she".
e. The teacher told us that water freezes at 0°C.
Indirect speech is when the direct words of the speaker are changed but still retaining the meaning.
f. People are killing tigers indiscriminately. or Somone is killing tigers indiscriminately.
Here, the addition of "people are/someone is" makes the active voice's subject while the object "tigers" are placed towards the end of the sentence.