Final answer:
The student's task was to convert positive sentences into negative ones, but the provided examples were already negative. The correct method includes using 'does not' or 'do not' before the main verb. The practice also extends to choosing the right homophones and ensuring subject-verb agreement in sentences.
Step-by-step explanation:
The student task involves changing positive sentences into negative sentences. Given that the sentences provided are already in negative form, it appears that there may have been an error in the question. However, I can offer an example of how to change a positive sentence into its negative form. For instance, the positive sentence 'Hari gets up at a quarter to five' would change into the negative as 'Hari does not get up at a quarter to five.' Similarly, each of the sentences (b) through (h) can be changed into their negative forms by inserting 'does not' for singular subjects or 'do not' for plural subjects before the main verb.
When practicing with homophones and commonly confused words, it's important to choose the correct word based on its meaning and usage within a sentence. For instance, 'hear' relates to the ability to perceive sound, while 'here' refers to a place. 'To' can indicate direction, 'too' means 'also' or 'excessively', and 'two' is the number after one.
In the context of verb agreement, the verb must match the subject in number and person. For example, 'There are fewer criminals on the street' is correct if 'criminals' is treated as a plural noun, while 'Mathematics is' is correct because 'Mathematics' is treated as a singular noun, despite ending in 's'.