Write the verbs in brackets in the past continuous or simple past tense.

题目

Write the verbs in brackets in the past continuous or simple past tense.
1.We felt guilty about the old car because while we ____ （drive),we ____ (pollute）our city .
2.While we ____ （stay）at the Magic Hotel,my dad ____ （see）sea horses for the first time.
3.We ____ （not have）air conditioners in our house,because we ____ （save）energy.

答案

were driving ,polluted
were staying,saw
didn‘t have,were saving