Example: use something in the wrong way or for the wrong purpose
Choice:
use
misuse
unuse
Example:
She'd been to London. (was)
She had been to London.
Example: He told the truth. Method: Figure out the noun which is a quality that you can only think and feel about. Then, select it. Answer: The noun in the above sentence is 'truth'. Therefore, the answer is 'truth'.
Example: to pay in advance
Choice:
repay
prepay
pay
Example: Julie is a melodious singer. Answer: Julie sings melodiously.