Change these sentences into PAST tense a) I will work hard during the test.

b) I will sing on the stage.

c) I eat my lunch everyday

a. I worked hard during the test.

b. I sang on the stage.

c. I ate my lunch (Since it is in past tense we will drop everyday)

Hope it helps :)

quite an interesting way to teach topic sentences, because the answer to this question is the best definition of a topic sentence that one can present, it is as if answering the questions taught you how to do it, this is some real teaching, it is terribly well-done.

the topic sentence in this paragraph is:

topic sentences writers stay on track and keep a paragraph from becoming an aimless collection of sentences about an idea.

which incidentally tells you what a topic sentence should be.