Необходимо СРОЧНО!Переделайте предложения в Present Perfect.Ex.1.Rewrite the sentences using the

Необходимо СРОЧНО!Переработайте предложения в Present Perfect.
Ex.1.Rewrite the sentences using the Present Perfect or Past Indefinite.
Examples:I am writing a letter to my cousin.(already;yesterday)
I have already written a letter to my cousin.
I wrote a letter to my cousin yesterday.
1)the waitress is bringing our tea(a few minutes ago;not yet)
2)the bell is ringing (just;some minutes ago)
3)He is going to London in a few days(already;last week)
4)The boys are playing football in the yard now(yesterday;many times)
5)Mother is reading a new novel by Aitmatov(this month;last year)
6)Students are cleaning their classrooms(already;last Saturday)
7)The teacher is explaining a new rule(just;at the pervious lesson)
8)Ann is doing her home work(just;on Friday)
9)They are discussing this problem again(many times; a few days ago)
10)Granny is making a birthday cake(just;yesterday)
11)The birds are flying to the South.(already;at the end of August)
12)the train is coming(just;an hour ago)
13)Who is your friend speaking to?(yesterday;just)
14)We are writing the words of Lesson 7(already;at the last lesson)