Choose appropriate verb forms to fill in the blanks:I saw an accident last night. Somebody __________ (call) an ambulance butnobody ___________ (injure) so the ambulance __________ (not/need). A. had called; injured; not needed B. called; was injured; wasn’tneeded C. had called; was injured; wasn’t needed D. had called; injured; was not needed.

The correct answer is: A. had called; injured; not needed

• had called – This is the past perfect tense, which is used to talk about an action that happened before another action in the past. In this case, the action of calling the ambulance happened before the action of seeing the accident.
• injured – This is the past participle of the verb “to injure,” which means to hurt someone or something. In this case, the ambulance was not needed because no one was injured in the accident.
• not needed – This is the negative form of the verb “to need,” which means to require something. In this case, the ambulance was not needed because no one was injured in the accident.

The other options are incorrect because they do not use the correct verb tenses. Option B uses the simple past tense, which is not appropriate for talking about an action that happened before another action in the past. Option C uses the past perfect tense, but it is used with the wrong verb form. The past participle of the verb “to be” is “been,” not “was.” Option D uses the simple past tense with the wrong verb form. The past participle of the verb “to injure” is “injured,” not “was injured.”