Question

complete the sentences with the present perfect form of the verb in

1. digital materials become (become) very popular in schools.
2. technology (change) the way we learn.
3. i (play) the game three times today.
4. matthew (not write) his report.
5. what you (do) since i last saw you?
6. i (not study) computer programming.
7. how smart phones (affect) classrooms?
8. the speaker (repeat) that information several times. it must be important.

Explanation:

1.

Step1: Identify subject and tense

Subject: Digital materials (plural), Tense: Present Perfect (have/has + past participle). "become" past participle is "become".

Step2: Apply present perfect

Plural subject uses "have", so "have become". Wait, original had "become" but correct present perfect is "have become". Wait, maybe the first one was a typo. Let's correct each:

1. Digital materials have become (become) very popular in schools. (Subject plural, present perfect: have + past participle (become))

1. Technology has changed (change). Subject "Technology" is singular, present perfect: has + past participle (changed).

1. I have played (play). Subject "I", present perfect: have + past participle (played).

1. Matthew has not written (not write). Subject singular, present perfect negative: has not + past participle (written).

1. What have you done (do)? Subject "you", present perfect: have + past participle (done).

1. I have not studied (not study). Subject "I", present perfect negative: have not + past participle (studied).

1. How have smart phones affected (affect)? Subject plural, present perfect: have + past participle (affected).

1. The speaker has repeated (repeat). Subject singular, present perfect: has + past participle (repeated).

Answer:

1. have become
2. has changed
3. have played
4. has not written
5. have; done
6. have not studied
7. have; affected
8. has repeated