Answer Explanations
Question 1 Explanation
The correct answer is cleaned. We use the Past Simple for finished actions in the past, and “yesterday morning” clearly shows a past time. “Clean” is a regular verb, so we add -ed to make the Past Simple form.
Question 2 Explanation
The correct answer is played. The sentence talks about an action that happened last Friday, so the Past Simple is needed. “Play” is a regular verb, and its Past Simple form is made by adding -ed.
Question 3 Explanation
The correct answer is watched. The phrase “last night” tells us that the action is finished and happened in the past. With regular verbs like “watch,” we use the -ed form in positive Past Simple sentences.
Question 4 Explanation
The correct answer is close. In negative Past Simple sentences, we use “didn’t” plus the base form of the verb. Because “didn’t” already shows the past, the main verb must stay in its base form.
Question 5 Explanation
The correct answer is visited. “Last weekend” is a finished past time expression, so the Past Simple is required. “Visit” is a regular verb, so its past form is visited.
Question 6 Explanation
The correct answer is listen. In Past Simple questions, we use “did” plus the base form of the verb. The auxiliary verb “did” carries the past meaning, so the main verb does not take -ed.
Question 7 Explanation
The correct answer is studied. The sentence describes a finished action in the past because it happened “all evening.” For regular verbs ending in consonant + “y,” we change “y” to “i” and add -ed.
Question 8 Explanation
The correct answer is played. The word “yesterday” shows that the action happened in the past and is now finished. “Play” is a regular verb, so the correct Past Simple form is played.
Question 9 Explanation
The correct answer is use. After “didn’t,” we use the base form of the verb in the Past Simple. We do not say “didn’t used” because the auxiliary “did” already marks the sentence as past.
Question 10 Explanation
The correct answer is worked. The sentence describes a completed past action or situation. “Work” is a regular verb, so we add -ed to form the Past Simple.
Question 11 Explanation
The correct answer is visit. In Past Simple questions, the auxiliary verb “did” is followed by the base verb. Since “did” already shows the past time, the verb after it must be visit.
Question 12 Explanation
The correct answer is thanked. The action happened after the class, so it is a completed past action. “Thank” is a regular verb, and its Past Simple form is made by adding -ed.
Question 13 Explanation
The correct answer is watch. In negative Past Simple sentences, “didn’t” is followed by the base form of the main verb. The verb should not have -ed because the past meaning is already shown by “didn’t.”
Question 14 Explanation
The correct answer is cried. The sentence talks about an action that happened during the night, so the Past Simple is needed. For regular verbs ending in consonant + “y,” such as “cry,” we change “y” to “i” and add -ed.
Question 15 Explanation
The correct answer is finish. In Past Simple questions, “did” is followed by the base form of the verb. We do not use “finished” after “did” because the auxiliary verb already makes the question past.