3. I wish that you …………….  here yesterday. (be)

The correct form of the sentence is "I wish that you had been here yesterday."

The reason for this is that 'wish' is often used to express a desire for something that did not happen in the past. When we talk about wishes related to the past, we use the past perfect form of 'have' + the past participle of the main verb.

In this case, 'you be' in the past becomes 'you had been' to indicate that we are referring to a situation where we wished someone was present at a specific time in the past (yesterday), but they were not. The construction reflects a sense of regret or longing for an alternative scenario that didn’t actually occur.

By using 'had been', we clearly indicate that the wish relates to a time that is fixed in the past, aligning with the temporal context of 'yesterday'.