The main work was the replacement/to replace or the main work consisted in replacing

[JACEK1]

It's me again.

A) The main work was the replacement of the auxiliary motor, which entailed cutting out an access opening in the side, modifying pipes and electric cables.

B) The main work was to replace the auxiliary motor, which involved cutting out an access opening in the side, modifying pipes and electric cables.

C) The main work consisted in replacing the auxiliary motor, which involved cutting out an access opening in the side, modifying pipes and electric cables.

Which version is acceptable to you?

"Which" refers to the work of replacing the auxiliary engine, of course.

Thank you.

 

[Tarheel]

They all look good to me, but what do I know? ;-)

(Don't thank me in advance. I give terrible advice.)

 

[JACEK1]

Is there anybody of another opiion?

 

[MikeNewYork]

I agree with Tarheel. And don't pay attention to his disclaimer. He gives great advice.

 

[Tarheel]

I would say, Jacek, that if you phrased those sentences yourself that your English is at an advanced level. Also, by now you should know when I am kidding. (If you insist on thanking people, use the "Thank" button.)

(I am looking forward to the day when I will no longer see "Thank you in advance".)

 

[JACEK1]

I alternate between "liking" and "thanking".