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Helen looked very frightened last night. She looked as if she ... a ghost.
1. saw
2. had seen
3. will see
She didn't know him, but she acted as if she ... him.
1. know
2. knew
3. is going to know
What a delicious smell! It smells as though mother... at the moment.
1. baked
2. had baked
3. is baking
My boss tells the same jokes all the time and we always laugh as though we ... them before.
1. never heard
2. had never heard
3. never hear
Bill is only twenty-three years old, but sometimes he behaves as if he ... much older.
1. was
2. were
3. had been
There was a lot of noise last night. It sounded as though the people next door ... a party.
1. had
2. are having
3. were having
It's very cold outside today. In fact, it feels as if it ... .
1. snowed
2. is going to snow
3. has snowed
Sue didn't study maths at university, but sometimes she talks about it as if she ... an expert on the subject.
1. is
2. had been
3. were