if we want make question of a subject with the word " who " can we use " are "after it?like: who are explainin

Question

read this examples: 1-Tom works here------>who works here?
2-mary is washing the dishes------>who is washing the dishes?
now you answer the following sentences.make question with " who " 3- they work in a bank------> 4-the teachers are explaining the lessons-------> plzzzzzzzz native englishs answer these questions

Answer 1

3. they work in a bank.......................> who works in the bank? 4. the teachers are explaining the lessons.....................> Who is explaning the lessons

Answer 2

Take this from an English teacher.

#3 Who works in a bank?
#4 Who explains the lessons?