Connect two sentences into a compound sentence with an object clause 1.He wonders.why did we buy such a cheap computer? 2.I am not sure.Has the film begun? 3.I am not sure.Has the film begun or not? 4.He has shown us.Who does the work best of all? 5.He hoped to know.Does the tiger come from Africa?

Connect two sentences into a compound sentence with an object clause 1.He wonders.why did we buy such a cheap computer? 2.I am not sure.Has the film begun? 3.I am not sure.Has the film begun or not? 4.He has shown us.Who does the work best of all? 5.He hoped to know.Does the tiger come from Africa?

he wonders that why they brought such a cheap computer.
i am not sure if the film has begun
i am not sure whether the film has begun or not
he has shown us that who the work bests of all
he hoped to know that the tiger comes from Africa