Question

Fill suitable form of verb:

We were good friends. We __________ (know) each other for a long time.

• A. has known
• B. had known
• C. have known
• D. is knowing

Answer 1

The correct option is B had known

The given sentence states a past action 'were good friends'. Hence the option will agree in tense.

Option B: 'Had known' is in the past perfect tense. It states an action that completed in the past. Hence it is relevant to the given sentence and option B is correct.

Option A: 'Has known' is in present perfect tense.

Option C; 'Have known' is also in present perfect tense. 'Have' is the plural form of 'has'.

Option D: 'Is knowing' is in present continuous tense. Also, 'is' presents a state. The verbs that relate to 'thinking' do not have a continuous tense form. 'Know' does not have a tense form. Hence 'knowing' as a verb form is not correct.

These verb forms do not agree with the past tense of the given sentence.

Hence options A, C and D are incorrect.