A) Subject + had + past simple
B) Subject + have + past participle
C) Subject + had + past participle
D) Subject + has + past participle

A) Subject + have not /haven’t + base verb
B) Subject + had not/hadn’t + past participle
C) Subject + has not/hasn’t + past participle
D) Subject + had not/hadn’t + past simple

A) Had + subject + past participle
B) Have + subject + past simple
C) Subject + had + past participle
D) Has + subject + past participle

A) cooking
B) cooked
C) had cooked
D) has cooked

A) had lost
B) lost
C) has lost
D) had loose

A) Continuous action in the future.
B) An action in the past without connection to another.
C) A habit in the past.
D) An action that began and ended in the past before another action.

A) Has she ever been to London before moving there?
B) Did she had ever been to London before moving there?
C) Had she ever been to London before moving there?
D) She had ever been to London before moving there?

A) He had went to the store before I called him.
B) I had never seen such a big dog before.
C) By the time we arrived, the show had started.
D) She had finished her homework before dinner.

A) working
B) had worked
C) has worked
D) worked

A) have done
B) doing
C) did
D) had done