could you please grammatically clarify the following : 1. i would rather went by a train 2. stop talking. 3. the shop remains closed. 4 get lost . 5. police has or have .6. none of the followed by is or was.

1. I would rather go by train.

5. This can be tricky. If you mean the "police officers" have. If you mean the "police force" has.

6. None is. None is always singular.

The others are correct.