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

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

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

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

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

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

A) Has she ever been to London before moving there?
B) Had she ever been to London before moving there?
C) Did she had 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) By the time we arrived, the show had started.
C) I had never seen such a big dog before.
D) She had finished her homework before dinner.

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

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