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

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

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

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

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

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

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

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

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