Any children in the playground a)are there б)is there b)are they г)is it

Под буквой ,,A" потому что множественное число

Are they any children in the playground

Паст прогрессив- действие, которое было в но происходило какое то продолжительное время , например: я читал книгу . i was reading a book
чаще всего добавляется ука3ание времени, в которое происходило действие, например : я читал книгу два часа. i was reading a book for two hours.

паст симп- действие, которое происходило в но происходило моментально, например: я 3акрыл дверь. i closed the door

т,е. книгу я читал два часа, а дверь просто в3ял и 3акрыл, это было моментальное и непродолжительное действие

1Many passengers were hurrying to their trains.
2A porter helped me with my luggage.
3The speed of modern plane can be
800 km in an hour
4There were many trains at the railway station
5We booked tickets in the booking
office beforehand.
6My father has queued up to book tickets for a long time.
7I noticed the stranger following me
8There is much traffic in my town.
9I was late for school because of traffic jam
10The departure time of our plane
was postponded.
11View from the mountain was wonderful.
12A taxi-rank may be very high.