Which sentence is correct?

Which sentence is correct?

1. Did you know that he was afraid about cats?
2. Did you know that he was afraid cats?
3. Did you know that he was afraid from cats
4. Did you know that he was afraid of cats?

Which sentence is correct?

1. Everest is the higher period in the world.
2. Everest is the higher mountain in the world.
3. Everest is more highest than a hill.
4. Everest is the highest mountain in the world.

Which sentence is correct?

1. The king has mercy in spite of the knight.
2. The king may have mercy about the knight.
3. The king has mercy with the knight.
4. The king had mercy on the knight.

Which sentence is correct?

1. What are you do?
2. What will do you do?.
3. What are you doing?
4. What have you do?

Which sentence is correct?

1. Going to the cinema, I met my girl-friend.
2. When go to the cinema, I met my girl-friend.
3. When gone to the cinema, I met my girl-friend.
4. When I was going to the cinema, I meet my girl-friend.

Which sentence is correct?

1. I left my book by my friend.
2. I left my book off my friend.
3. I left my book with my friend.
4. I left my book during my friend.

Which sentence is correct?

1. Would you like a cigarette?
2. Do you like a cigarette?.
3. I like a book of stamps, please.
4. I have like a book of stamps, please.

Which sentence is correct?

1. I have came.
2. Have you have your lunch yet?
3. I have never been in Yugoslavia.
4. They have just finish their work.

Which sentence is correct?

1. By Christmas they shall have been here for a year.
2. By Christmas they have been here for a year.
3. By Christmas they shall be here for a year.
4. By Christmas they are here for a year.

Which sentence is correct?

1. The dog be there to keep the man from going into the garden.
2. The dog is there to keep the man from go into the garden.
3. The dog will be there to keep the man from going into the garden.
4. The dog is there to keep the man about going into the garden.