I go to the gym three times a week to keep [at / from / in / on] shape.
in
It's very hard for me to save money. (ASIDE)
It's very hard for me to put money aside.
We got lost because we didn’t have a map. (HAVE)
We wouldn't have gotten lost if we had had map.
People often say I am too cold. (CRITICISED)
I am often criticised for being too cold.
You'll be late if you miss the bus. (UNLESS)
You'll be late unless you get the bus.
Pedro was so seriously ill I couldn't imagine how he was going to pull [ahead / down / on / through].
through
Bruno said he was sorry he broke the vase. (APOLOGISED)
Bruno apologised for breaking the vase.
Don't forget your coat if it gets colder tonight. (CASE)
Don't forget your coat in case it gets colder tonight.
I was almost sure Duda forgot her books at home. (MUST)
Duda must have forgotten her books.
There's no doubt (at / from / in / through) my mind you're wrong.
in