Every sentence has one grammar mistake. Sets 1 and 2: click the wrong word and type the fix, then press Enter. Sets 3 and 4: rewrite the sentence correctly and press Enter.
Set:
Click mode
Exercise 1: Wrong have / has
Click the wrong word, type the correct form, then press Enter.
Set:
0/ 10
1
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Correct form:
2
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3
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4
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5
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6
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7
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8
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9
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Correct form:
10
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Correct form:
+ Affirmative
Subjecthave / hasbeenverb-ing.
I have been working. · She has been studying. · They have been waiting.
− Negative
Subjecthaven't / hasn'tbeenverb-ing.
I haven't been sleeping well. · She hasn't been feeling well.
? Question
Have / Hassubjectbeenverb-ing?
Have you been waiting long? · Has she been crying? · How long have you been learning?
Which auxiliary to use
Subject
Auxiliary
I / You / We / They
have been
He / She / It ★
has been
★ Key rule: He / She / It → has been, not have been. She has been working ✅ She have been working ❌