Add punctuation: In Montreal the climate is cold and temperate
A: In Montreal, the climate is cold and temperate.

Add punctuation: The watch case is made of stainless steel and together with the stunning dial it completes the design
A: The watch case is made of stainless steel and together with the stunning dial, it completes the design.

Add punctuation: But they were not on one of the biggest shelfs were the catch used to be the greatest
A:
But they were not on one of the biggest shelfs, were the catch used to be the greatest.