Change the following questions to embedded questions:

"Where is the toilet?"

Change the following questions to embedded questions:

"When will the exam start ?"

Change the following questions to embedded questions:

"What time is it?"

Change the following questions to embedded questions:

"Do you understand the lesson?"

Change the following questions to embedded questions:

"Is the teacher coming?"

Change the following questions to embedded questions:

"Did he do the homework?"

Change the following questions to embedded questions:

"Does she finish the exercises?"

Change the following questions to embedded questions:

"Should Sara buy the new laptop?"

Change the following questions to embedded questions:

"Why was Jack absent yesterday?"

Change the following questions to embedded questions:

"When did Sam go to Singapore?"