1. I used to own a simalar bike to yours.

2.The sauce is taste less, hasn't it?

3.  You mustn't to take photographs inside the museum.

4.There is much traffic jam in the city center on Saturdays night. 

5. Are you good at making friends?

1. Your bicycle is just like the one I used to own.                             
=> I used to own a similar bike to you.
2. This sauce hasn’t got much flavour, has it?                              
=> This sauce is tasteless, isn't it?
3. Taking photographs inside the museum is forbidden                         
=> You must not take photographs inside the museum.
4. On Saturday night, the roads to the city centre are very busy         
=> There is a traffic jam in the city centre on Saturday night.
5. Do you find it easy to make friends?                                                  
=> Are you good at making friends?