At midnight I (to sleep) ... .

2. This evening we (to watch) ... TV.

3. He (to listen) ...to music.

4. Dad (to read) ... a book this evening.

1. At midnight I (to sleep) ...

Answer: At midnight I will be sleeping.

Explanation: The question is about an action that will happen in the future at midnight. We can use the future tense "will" to indicate that something will happen. In this case, I will be sleeping at midnight.

2. This evening we (to watch) ... TV.

Answer: This evening we will be watching TV.

Explanation: The question is about an action that will happen in the future this evening. Again, we can use the future tense "will" to indicate future actions. In this case, we will be watching TV this evening.

3. He (to listen) ...to music.

Answer: He will be listening to music.

Explanation: The question is about an action that will happen in the future, but it doesn't specify the exact time. Here, we still use the future tense "will" to indicate that he will be listening to music at some point in the future.

4. Dad (to read) ... a book this evening.

Answer: Dad will be reading a book this evening.

Explanation: The question is about an action that will happen in the future this evening. Once again, we can use the future tense "will" to indicate that dad will be reading a book this evening.