Question

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Exercise 3. Rewrite the following sentences, using the correct tense, simple present or
present continuous, of the verbs given in the brackets:
1. Usually Bunty (takes care of these plants. I (trim and water) them today because Bunty
(prepare) for an important test.
2. (You understand) what the speaker (say)?
He (speak) in a foreign language which I (not know).
3. Father (not work) on Sundays. He (go) to church, (write) emails to his friends and (listen)
to some good music. Today he (not feel) well, so he (sleep).
4. A person who (argue), (feel) he (know) everything. He (not think he (need) more
knowledge. Wise people (not like) to give advice to such a person,
5. Your father (look) tired. (He not keep) well?
I (not know). Father (not share) his feelings with anyone. However, he (see) his doctor in
the evening.
6. (They have) a meeting inside? What (they discuss)? Why (you not find out when they
(propose) to come out?
7. The clouds (get thick) by the moment, and the sky (get) dark. Still the fishermen (want)
to put their boats to sea. Their wives (persuade) them not to go but nobody (listen) to
them.​

Answer 1

Answer:

Explanation:

. A Sudheer wants to find focal length of a concave mirror azperimentally

What apparatus does he need?

Is the screen required or not? Explain?

Draw the table required to tabulate the values found in his experiment?

What is the formula used by him to find the focal length?