In my opinion/in conclusion

[Anna232]

Should I always use a comma after "in my opinion" and "in conclusion"? Is the earth always capitalized in such contexts?

1. In my opinion/in conclusion, it is high time time the goverment made important decisions to save the Earth.

 

[emsr2d2]

Yes, you need a comma after those phrases.

See HERE for useful information on the capitalisation of the name of our home planet.