1. The correct variant of Present Perfect is "have tidied".
We use Present Perfect when talking about actions that happened at an unspecified time before now or when the time is not important. In this case, we don't know exactly when Jill and Carrie tidied their rooms, and the focus is on the fact that it has been done.
2. The correct variant of Present Perfect is "have got".
We use Present Perfect when talking about actions that happened in the past but have a connection to the present. In this case, the action of getting the trophy has been completed, but it is still relevant in the present because they currently have the trophy.
3. The correct variant of Present Perfect is "has not worked".
In negative sentences, we use "not" after the auxiliary verb "has" to form the negative form of Present Perfect. The correct form of the main verb is "worked" because it is the past participle form of "work". We use Present Perfect to talk about actions that happened at an unspecified time before now or when the time is not important. In this case, we don't know exactly when Tina did not work today, but the focus is on the fact that she didn't work.
Therefore, the correct answers are:
1. Jill and Carrie have tidied their rooms.
2. You and Tom have got the trophy.
3. Tina has not worked today.
We use Present Perfect when talking about actions that happened at an unspecified time before now or when the time is not important. In this case, we don't know exactly when Jill and Carrie tidied their rooms, and the focus is on the fact that it has been done.
2. The correct variant of Present Perfect is "have got".
We use Present Perfect when talking about actions that happened in the past but have a connection to the present. In this case, the action of getting the trophy has been completed, but it is still relevant in the present because they currently have the trophy.
3. The correct variant of Present Perfect is "has not worked".
In negative sentences, we use "not" after the auxiliary verb "has" to form the negative form of Present Perfect. The correct form of the main verb is "worked" because it is the past participle form of "work". We use Present Perfect to talk about actions that happened at an unspecified time before now or when the time is not important. In this case, we don't know exactly when Tina did not work today, but the focus is on the fact that she didn't work.
Therefore, the correct answers are:
1. Jill and Carrie have tidied their rooms.
2. You and Tom have got the trophy.
3. Tina has not worked today.