upside down: with the upper side turned toward the lower side
inside out: with the inside facing the outside
to look forward to: to expect or anticipate with pleasure
This idiom can be followed by a regular noun or a gerund.
as a matter of fact: really, actually (also: in fact)
to come true: to become reality, to prove to be correct
to make fun of: to laugh at, to joke about
to hear of: to know about, to be familiar with; to consider
The second definition is always used in the negative.
to hear from: to receive news or information from
To hear from is used for receiving a letter, telephone call, etc., from a person or organization.
once and for all: finally, absolutely