Question

Read the given situation and fill in the blank using just, already or yet with the appropriate form of the verb given in the bracket:
You are going to a restaurant this evening. You phone to reserve a table. Later your friend says, 'Shall I phone to reserve a table?'
You say: No, ________ (do) so.

• A. I have just done
  
• B. I have already done
  
• C. I have done yet
  
• D. I have not done yet
  

Answer 1

Answer: (B)

I have already done

The present perfect tense is used to express something which is not yet finished, which started in the past and continues to the present. The syntax for present perfect is: has (with singular subject) / have ( with plural subject ) + verb in past participle form. 'I' and 'You' are exceptional cases which, in spite of being singular subjects, take the verbs of plural subjects. 'Just' is used when the action happened some moments before the current time. 'Already' is used with actions done some time before the current time & 'Yet' is used with the action which has not been done until the present context of time. Here, the action has been done some time before the given context of time. Therefore, the correct answer is: I have already done.