personal pronouns

[rajeshwar]

hi

plz provide an answer for the following....
Fill the blanks with correct personal pronouns
1) Let him and .......try to complete this job ( I. me)
2) Gopal is as old as ....... ( me, I)
3) Whom can I trust if not .......? ( she. her)
4) It was .......that gave you the warning (me, I )

[Casiopea]

Written English
1) Let him and me try to complete this job.
Test it: Let us <object pronoun>

2) Gopal is as old as I (am).
Test it: Gopal is <subject-verb> + I (am) <subject-verb>

3) Whom can I trust if not her?
Test it: Whom can I trust If (I can) not (trust) her? <her is the object of the verb trust>

4) It was I that gave you the warning.
Test it: I gave you the warning. <I is the subject of the verb gave.>