Choose the right variant of Present Perfect: 1. Amy
her bed.

2. You and Tom
the trophy.

3. Leo
his toys away.

1. Amy has made her bed.
To choose the correct variant of Present Perfect, we need to consider the subject, which is Amy in this case, and the action, which is making her bed. In Present Perfect, we use the auxiliary verb "have" or "has" followed by the past participle of the main verb. Since "Amy" is a singular third-person subject, we use "has" as the auxiliary verb and the past participle of "make" is "made". Therefore, the correct sentence is "Amy has made her bed."

2. You and Tom have won the trophy.
Similarly, for this sentence, we have two subjects - "You and Tom" and the action is winning the trophy. Since "You and Tom" is a plural subject, we use "have" as the auxiliary verb and the past participle of "win" is "won". Therefore, the correct sentence is "You and Tom have won the trophy."

3. Leo has put his toys away.
Again, considering the subject "Leo" and the action "putting his toys away", we use "has" as the auxiliary verb since "Leo" is a singular third-person subject. The past participle of "put" is "put". Therefore, the correct sentence is "Leo has put his toys away."

Present Perfect is used to talk about actions that happened in the past but have a connection to the present. The auxiliary verb "has" is used with singular third-person subjects (he, she, it) and "have" is used with all other subjects. The past participle of the main verb is formed differently for regular and irregular verbs, so it is important to learn and memorize the specific forms.