Select the most appropriate option to fill in the blank and make a grammatically correct sentence.

The car-park was full, so we ________ to look for another place to park.

had

The most appropriate option to fill in the blank is had.

• The sentence is in the past tense, and the verb "to have" needs a past tense form. The past tense form of "to have" is "had."
• The other options are not grammatically correct.
  • Having is the present participle form of "to have." It is not the correct tense to use in this sentence, because the speaker is talking about something that happened in the past.
  • Has is the third person singular present tense form of "to have." It is not the correct tense to use in this sentence, because the speaker is not talking about someone else.
  • Have is the first person plural present tense form of "to have." It is not the correct tense to use in this sentence, because the speaker is not talking about themselves.