Agree is a verb; it does not need be.
Which sentence is correct?
HOW SURE ARE YOU?
Your personal history changes only after you submit an answer.
Every mistake can become
a reliable new pattern.
See the correction, understand one clear reason and practise the complete phrase—not an isolated rule.
English uses be to state age.
Which sentence is correct?
HOW SURE ARE YOU?
Your personal history changes only after you submit an answer.
After did, use the base verb.
Which sentence is correct?
HOW SURE ARE YOU?
Your personal history changes only after you submit an answer.
Tell takes the listener directly; say does not.
Which sentence is correct?
HOW SURE ARE YOU?
Your personal history changes only after you submit an answer.
Do homework is the fixed collocation.
Which sentence is correct?
HOW SURE ARE YOU?
Your personal history changes only after you submit an answer.
Use present perfect for a state continuing from the past.
Which sentence is correct?
HOW SURE ARE YOU?
Your personal history changes only after you submit an answer.
People is grammatically plural.
Which sentence is correct?
HOW SURE ARE YOU?
Your personal history changes only after you submit an answer.
To is a preposition in this phrase, so it is followed by -ing.
Which sentence is correct?
HOW SURE ARE YOU?
Your personal history changes only after you submit an answer.
Use on with days and at with precise clock times.
Which sentence is correct?
HOW SURE ARE YOU?
Your personal history changes only after you submit an answer.
Bored describes how a person feels; boring describes what causes the feeling.
Which sentence is correct?
HOW SURE ARE YOU?
Your personal history changes only after you submit an answer.
Explain takes the topic directly and the listener after to.
Which sentence is correct?
HOW SURE ARE YOU?
Your personal history changes only after you submit an answer.
Last year is a finished past time, so use past simple.
Which sentence is correct?
HOW SURE ARE YOU?
Your personal history changes only after you submit an answer.
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