solve the crossword puzzle

$1.)$ contract expressed by conduct $(16$ spaces$)$

$4.)$ agreement that can not be enforced by any party $(14$ spaces$)$

$5.)$ agreement where something remains to be done $(18$ spaces$)$

$7.)$ contract under which only one party makes a promise $(19$ spaces$)$

The yellow spaces are already correct. The answer choices must be the listed amount of spaces so please dont say the answer is void, or unilateral, etc it doesnt fit