1. Study the following sentences and answer the questions below.Focus on the meaning of the underlined words. 1. Hanna knocked on the door but her sister didn't let her in. 2. My friend Kider often misbehaves in class, but this time, the teacher decided not to let him off. 3. I was planning a surprise birthday gift to my father, but my younger brother decided to let him on

1. The underlined word in the first sentence is "let her in." This phrase means to allow someone to enter a place, such as a house or building. In this context, Hanna's sister did not allow her to enter the house.<br /><br />2. The underlined phrase in the second sentence is "let him off." This phrase means to allow someone to escape punishment or consequences for their actions. In this context, the teacher decided not to punish Kider for his misbehavior in class.<br /><br />3. The underlined phrase in the third sentence is "let him on." This phrase means to allow someone to participate in or be involved in something. In this context, the younger brother decided to allow the father to participate in or be involved in the surprise birthday gift plan.