(it, snow) in Moscow yesterday at 10.
It WAS SNOWING in Moscow yesterday at 10.
(it, snow) in Moscow yesterday at 10?
WAS IT SNOWING in Moscow yesterday at 10?
(it, rain) VERY OFTEN in London three years ago?
DID IT RAIN very often in London three years ago?
Two pigs (play) football when it (start) raining.
Two pigs WERE PLAYING football when it STARTED raining.
(two pigs, play) football when it (start) raining?
WERE two pigs PLAYING football when it STARTED raining?
The dog and the polar (skate) every day last year.
The dog and the polar bear SKATED every day last year.
(the dog and the polar bear, skate) EVERY SUNDAY last year?
DID the dog and the polar bear SKATE every Sunday last year?
I (usually, fly) in my dreams.
I usually FLY in my dreams.
(I, usually, fly) in my dreams when I (be) little?
DID I usually FLY in my dreams when I WAS little?
I (do) my morning exercises at 7 o'clock yesterday morning.
I WAS DOING my morning exercises at 7 o'clock yesterday morning.
(I, do) my morning exercises NOW?
WAS I DOING my morning exercises at 7 o'clock yesterday morning?
HOW OFTEN (it, rain) in London three years ago?
How often DID it RAIN in London three years ago?
What (two pigs, do) yesterday when it (start) raining?
What WERE two pigs DOING yesterday when it STARTED raining?
What (the dog and the polar bear, do) EVERY DAY last winter?
What DID the dog and the polar bear DO every day last winter?
What (I, usually, do) in my dreams when I (be) little?
What DID I usually DO in my dreams when I WAS little?
What (I, do) yesterday at 7 in the morning?
What WAS I DOING yesterday at 7 in the morning?
