$1.$ Rice is grown in tropical countries.
- S + is/ are + V (Pii) + (by O).
$2.$ His children are loved very much by Mr. Green.
- S + is/ are + V (Pii) + (by O).
$3.$ French isn't spoken here.
- S + is/ are + V (Pii) + (by O).
$4.$ His windows were broken last night.
- S + was/ were + V (Pii) + (by O).
$5.$ The article has been written by Jack recently.
- S + have/ has + been + V (Pii) + (by O).
$6.$ That cake has been made by my mom.
- S + have/ has + been + V (Pii) + (by O).
$7.$ That letter was written by my brother.
- S + was/ were + V (Pii) + (by O).
$8.$ Her homework is being done now.
- S + is/ are + being + V (Pii) + (by O).
$9.$ A lot of questions are being asked by him.
- S + is/ are + being + V (Pii) + (by O).
$10.$ History is taught by Mrs. Nga.
- S + is/ are + V (Pii) + (by O).