10. Complete the questions. 1. Your father returned from Istanbul yesterday?

2. The toys are neither in the box nor under the table ?

1. Did your father return from Istanbul yesterday?

To answer this question, we need to use the past tense form of the verb "return," which is "returned." Additionally, we need to use the auxiliary verb "did" to form a question in the past tense. The word "yesterday" indicates that the action occurred in the past.

2. Are the toys neither in the box nor under the table?

To answer this question, we need to understand the meaning of the word "neither." This word is used to express a negative correlation between two options. In this case, the toys are not in either the box or under the table. Therefore, we can conclude that the correct answer is "No, the toys are not in the box or under the table."