Question

A cold wind _____for the last week.
(a)has been blowing
(b)is blowing
(C)blows
(d)blew

Answer 1

A cold wind has been blowing for the last week. (Present perfect continuous tense).

Present perfect continuous tense:

• Present perfect continuous tense shows an action that started in the past and continues the present.
• Formule: Subject + has/have been + verb I (ing) + since/for + object.
• 'Since' is used for a certain or specific time in the past.
• 'For' is used to mention the periods of time.
  

Thus, option (a) is correct - has been blowing