A. Listen carefully, and choose the picture suitable for the content of the dialogue.

B. Listen carefully, and draw a line to find out who teaches which subject.
Look at the two people on the left, and the textbooks on the right.
Draw a line between while you listen to the dialogue.

C. Listen carefully and draw a line between each person and the birthplace as in the example.

A. Listen carefully, and paying attention to the colored alphabet, read the following after the tape.

B. Listening to the stress (mark), listen carefully.
And then have a conversation with your friend.
Listen carefully and mark accent for the stressed word.
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Would you let me know whether the expressions above are grammatical or not? If there are any unnatural sentences, correct them,please.

A. Listen carefully, and choose the picture suitable for the content of the dialogue.

sounds good

B. Listen carefully, and draw a line to indicate who teaches which subject.
Look at the two people on the left, and the textbooks on the right.
Draw a line between while you listen to the dialogue.
sounds good

C. Listen carefully and draw a line between each person and the birthplace as in the example.

A. Listen carefully, paying attention to the colored alphabet, and read the following after the tape.

B. Listen carefully for the stressed syllables. Then have a conversation with your friend.
Listen carefully and mark the accent on the stressed words.

In that last one, you may need to say "stressed syllables" since only one-syllable words have only stressed sounds. Two or more syllable words usually have a stressed and at least one unstressed syllable. Let me know if you want specifics.

A. Listen carefully, and choose the picture suitable for the content of the dialogue. [Grammatical]

B. Listen carefully, and draw a line to find out who teaches which subject.
Look at the two people on the left, and the textbooks on the right.
Draw a line between while you listen to the dialogue. [Grammatical]

C. Listen carefully and draw a line between each person and the birthplace as in the example. [Grammatical]

A. Listen carefully, and paying attention to the colored alphabet, read the following after the tape. [Grammatical]

B. Listening to the stress (mark), listen carefully.
And then have a conversation with your friend.
Listen carefully and mark accent for the stressed word. [Unnatural]

Revised:

B. Listen carefully to the stress mark.
Then have a conversation with your friend.
Listen carefully and mark the accent for the stressed word.

A. Listen carefully, and choose the picture that best represents the content of the dialogue.

B. Listen carefully and draw a line to match each person with the subject they teach. Look at the two people on the left and the textbooks on the right. Draw a line between them as you listen to the dialogue.

C. Listen carefully and draw a line connecting each person to their place of birth, following the example.

A. Listen carefully, paying attention to the colored alphabet, and read the following after the tape.

B. Listen carefully to the stress in the dialogue. Then, have a conversation with your friend and mark the accent for the stressed word.