Prepositional Phrases

ANSWERS 1: WAS OUT OF REACH
EXPLANATION
OUT OF REACH => not able to be achieved.
More Examples:
Cleaning fluids should be kept out of the reach of children. V OUT OF REACH
Cleaning fluids should be kept off the reach of children. X

ANSWERS 2: WAS REPAIRED AT PETER'S EXPENSE
EXPLANATION
AT SOMEBODY'S EXPENSE => paid for by somebody.
More Examples:
We were supposed to provide safety equipment at our own expense. V AT SOMEBODY'S EXPENSE
We were supposed to provide safety equipment on our own expense. X

ANSWERS 3: ON BEHALF OF
EXPLANATION
ON BEHALF OF => as a representative of someone.
More Examples:
The teacher accepted the award on behalf of the whole class. V ON BEHALF OF
The teacher accepted the award on behalf for the whole class. X

ANSWERS 4: AT FIRST SIGHT
EXPLANATION
AT FIRST SIGHT => when first seen or considered.
More Examples:
At first sight, the proposal seems ridiculous. V AT FIRST SIGHT
On first sight, the proposal seems ridiculous. X

ANSWERS 5: IN TIME
EXPLANATION
IN TIME => not late; with enough time to be able to do something.
More Examples:
The ambulance got there in time. V IN TIME
The ambulance got there on time. X

ANSWERS 6: IN CASE IT RAINS
EXPLANATION
IN CASE => for the purpose of being ready for something that might happen.
More Examples:
I'll make some sandwiches, in case we get hungry later on. V IN CASE + PRONOUN + VERB
I'll make some sandwiches, in case of we get hungry later on. X