(it/be/cold/last week)

1.   ?    It was cold last week.
2.   ?    It is cold last week.
3.   ?    It has been cold last week.
4.   ?    It was being cold last week.

(Mary/earn/a lot of money/this year)

1.   ?    Mary might earned a lot of money this year.
2.   ?    Mary have earned a lot of money this year.
3.   ?    Mary has earned a lot of money this year.
4.   ?    Mary was earning a lot of money this year.

(have/you/a vacation/recently?)

1.   ?    Were you have vacation recently?
2.   ?    Have you had a vacation recently?
3.   ?    Will you have a vacation recently?
4.   ?    Did you have a vacation recently?

Tom is hungry. (he/eat/no/today)

1.   ?    He has not eaten today.
2.   ?    He does not eat today.
3.   ?    He have not eaten today.
4.   ?    He has not eated today.

(I/be/to the movies/lately)

1.   ?    I was to the movies lately.
2.   ?    I were to the movies lately.
3.   ?    I was being to the movies lately.
4.   ?    I have been to the movies lately.

(I/graduate/from college/last month)

1.   ?    I have graduated from college last month.
2.   ?    I graduated from college last month.
3.   ?    I did graduated from college last month.

(you/ever/be/to Africa?)

1.   ?    Has you ever been to Africa?
2.   ?    Were you ever to Africa?
3.   ?    Have you ever been to Africa?
4.   ?    Was you ever to Africa?

This is the most beautiful flower I /see/

1.   ?    This is the most beautiful flower I see!
2.   ?    This is the most beautiful flower I have ever seen!
3.   ?    This is the most beautiful flower I seen!
4.   ?    This is the most beautiful flower I saw!

I offered her toast but she is not hungry, she/have/breakfast

1.   ?    she have had breakfast already.
2.   ?    she has have breakfast already.
3.   ?    she has had breakfast already.
4.   ?    she had had breakfast already.

I am very tired. I/study/all night long

1.   ?    I have studied all night long.
2.   ?    I have been studied all night long.
3.   ?    I studied all night long.