1) I'm not acquainted his mother.
CORRECT! ACQUAINTED + WITH
2) She doesn't want more money - she's content what she has.
CORRECT! CONTENT + WITH
3) I'm sick hearing about it.
CORRECT! SICK + OF
4) George was intent the job he was doing.
CORRECT! INTENT + ON
5) The western diet should be perfectly adequate most people.
CORRECT! ADEQUATE + FOR
6) Led lamps are efficient converting electricity into light.
CORRECT! EFFICIENT + AT | IN
7) You may submit written questions or comments relevant the proposed action.
CORRECT! RELEVANT + TO
8) If you are new this software, here is a step-by-step plan for getting started.
CORRECT! NEW + TO
9) Children who have been abandoned their fathers may experience a wide range of emotions.
CORRECT! ABANDONED + BY
10) Is it necessary me to sign my name?
CORRECT! NECESSARY + FOR