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