Answer:
The groom stepped mournfully into the bedroom.
We frequently read story books.
It depends on which mainstreaming you are referring to.
Mainstreaming can simply mean - to bring into the mainstream.
When it comes to education, here is what mainstreaming is: <span>the practice of educating students with </span>special needs<span> in regular classes during specific time periods based on their skills.
There's also a thing called gender mainstreaming, which is a strategy for promoting gender equality. </span>
I say C. Chronologically, from earliest to most recent.
Present
Present progressive has "-ing", present emphatic requires the verb "do" or "does" and present perfect requires "is/has/have"