20 do Activity 1: What Tense to be Used! Directions: Choose the correct tense of the verb inside the parenthesis. 1. We (left, leave) the house early last Monday. 2. As Christians, we (celebrate, celebrated) Christmas every December. 3. Our teachers (will have, have) their home visitation next month. 4. The president (love, loves) to eat in an eatery. 5. Researchers (discovered, discover) how CoViD-19 infects a person.​