Choose ONE mistake in each sentence

Ex2: Choose ONE mistake in each sentence
1. How many camera does this smartphone have ?   
 A. How          B. many          C.camera           D. have
2. Do this tablet have a long battery life ?
A. Do              B.have            C.long               D. battery life 
3. Why do you use your phone for ?
A. Why           B. do                C.use                D. for 
4. How many does the latest model cost one ?
A. How           B. many            C. does             D. cost 
5. Does this laptop has the same storage space as that one ?
A. Does          B. has               C. same            D. as