Choose the correct active form of the given sentence.
Geometry is taught to us by Mr. Sam.

Correct option is D

The correct active voice of the given sentence is (d) Mr. Sam teaches us geometry.
Explanation of conversion:
· The passive “is taught” is Simple Present Passive (am/is/are + V³).
· Identify agent: by Mr. Sam → becomes the subject in active.
· Identify objects: to us (indirect object) and geometry (direct object).
· Convert to active Simple Present: Mr. Sam (S) + teaches (V1-s) + us (IO) + geometry (DO).
· Structure:
· Active voice (ditransitive): Subject + V1(s/es) + Indirect Object + Direct Object
· Passive voice:
· Using DO as subject: Direct Object + am/is/are + V³ + (to) Indirect Object + by + Agent
· Using IO as subject (alternative): Indirect Object + am/is/are + V³ + Direct Object + by + Agent
· Example:
· Passive: We are taught English by Ms. Rita. → Active: Ms. Rita teaches us English.
· Information booster: With verbs that take two objects (give/teach/tell/send), either object can become the subject in the passive (We are taught geometry by Mr. Sam / Geometry is taught to us by Mr. Sam), but when restoring to active, use the agent as subject and keep IO before DO without “to”: teaches us geometry (not teaches to us geometry).