homework

Good afternoon [이름]!

Thank you for doing your homework again.

I went over it and I noticed that you got confused with B and C.

When we say progressive form, we are talking about an ongoing action in progress at some point in time.
The verbs in the progressive form use a form of \"to be\" + the present participle (an -ing verb).

Here are some examples:
Present Progressive: The cake is baking slowly.
Past Progressive: The trees were waving back and forth.
Future Progressive: The children will be laughing.

The perfect and progressive forms can be combined, as in the following examples (again, the form of the helping verbs indicates the tense):

Present Perfect Progressive: I have been running for an hour.
Past Perfect Progressive: I had been running for an hour.
Future Perfect Progressive: I will have been running for an hour.

Kindly review the sentences below. See you later.

~Teacher Shanee^^,

A. 1. have, since

>>> Correct!
 2. has, for

>>> Correct!
 3. has, since

>>> Correct!
 4. has, since

>>> Correct!
 5. has, for

>>> Correct!

 B. 1. The cat chased the mouse.

>>> The cat has been chasing the mouse.
 2. You copied the homework.

>>> You have been copying the homework.
 3. They invented a new gadget. 

>>> They have been inventing a new gadget.
 4. We did not cat in a forum.

>>> We have not been chatting in a forum.
 5. Lucy was not concentrating on the task.

>>> Lucy has not been concentrating on the task.

 C. 1. Does Kerry paint?

>>> Has Kerry been painting?
 2. Did the secretary print out the documents?

>>>  Has the secretary been printing out the documents?
 3. Do they share a room?

>>> Have they been sharing a room?
 4. How long can the dog run around?

>>> How long has the dog been running around?
 5. How long have you been knocking at the door?

>>> How long have you been knocking at the door?