Note: We use "at" preposition with word "surprised"
2. You see that birds.
That bird are seen by you.
That bird is seen by you.
That bird was seen by you.
That bird is seen you.
That birds is seen by you.
Answer: Option B
3. Someone has stolen his book.
His book is been stolen.
His book has been stolen.
His book is stolen.
His book has stolen.
Answer: Option B
Explanation:
Apart from Rule to make active voice of Present Perfect Tense, which is
Passive subject + has/have + been + third form of verb + by + passive object
Please also note that words like, "someone", "somebody", "people", "police", "public" etc are dropped. But in rare cases we can use them if sentence meaning is not clear.