Forming question tag：练习题

Select the most appropriate question tag to complete the following sentence:
She rarely visits her grandparents in the village, ______?

Identify the correct question tag for this sentence containing the modal verb 'must' expressing obligation:

We must finish our writing draft by Friday, ______?

Analyze the following sentence and choose the correct question tag, keeping in mind the special rule for 'I am':

I am responsible for summarizing the main ideas of the Science text, ______?

In an academic presentation about environmental pollution, a student says, "The government can make better use of the land through sustainable urban planning, ______?"
Which of the following is the correct question tag based on the modal verb used?

Choose the correct question tag for the following statement which includes a negative-leaning adverb:
The students have hardly finished their homework yet, ______?

Complete the following sentence with the correct question tag based on the past continuous tense:
The students were practicing their listening skills all morning, _______?<\/b><\/p>

Add the correct question tag to this sentence containing the semi-negative word 'scarcely':
The library scarcely has any copies of the latest English journals, _______?<\/b><\/p>

In an academic discussion about history, a student says:
"There were hardly any records of the waltz being a peasant dance, ______?"

Formulate the correct question tag and explain how the word 'hardly' affects the polarity of the tag.

Read the following short dialogue from a group discussion about a Science project and answer the questions below:

Student A: "We have to submit the lab report by tomorrow, ______?"
Student B: "Yes, but suppose we need more time to calculate the results."
Student C: "Let's ask Mr. Chan for an extension, ______?"

a) Provide the correct question tag for Student A's statement, identifying the correct tense.
b) In Student B's response, identify the rhetorical function of the italicized phrase.
c) Provide the correct question tag for Student C's suggestion.

Correct the errors in the following question tags and provide a brief explanation for each correction:

1. "I am right about the grammar rules, am not I?"
2. "You used to play the piano, didn't you?" (Determine if this is already correct).
3. "Nothing is impossible, isn't it?"

a) Rewrite the corrected tags for sentences 1 and 3.
b) Explain the special rule for "I am".
c) Explain why the tag for sentence 3 must be positive and why the pronoun is 'it'.