Multiple choice

Directions: The sentence below has a blank that needs to be filled with appropriate word(s). Four alternatives are suggested. Choose the correct alternative.

They _______ the bridge when I was here last year.

  1. have been building

  2. have built

  3. were building

  4. had been building
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

We use simple past or past continuous tense in case there is a reference to a point of time in the past. 

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