To complete the sentences with the correct forms of the verbs given:
Before we traveled to Paris, we researched all the best places to visit.
Explanation: Past simple tense is used to show an action that was completed before another action in the past (traveling to Paris)."The potatoes are undercooked." -- "I will put them back in the oven."
Explanation: Future simple tense is used here for a decision made at the moment of speaking to fix the undercooked potatoes.I was about to go to bed when he called.
Explanation: Past simple tense is used to express that one action happened immediately after another action in the past.We were discussing a surprise birthday party for Jake when he went into the classroom, so we had to stop talking.
Explanation: Past continuous tense is used here to describe an interrupted action that was in progress when another action occurred (Jake entering the classroom).