Глагол правильный и поэтому
perform
performed
performed
Все зависит от того какое существителтное мы подставим: например, поля. Бескрайние поля. Поля ( что?) иминительный падеж, значит и прилагательное такого же падежа
The waiter serves people in the cafe
1 Have you fight again?
2 How long has it been hurt?
3 I have been teaching japanese since August
4 Anna has been looking for a job for 6 month
5 They have been working in Saratov since the 1 January
6 How deep the snow is! How long have the snow been falling?
7 It has been raining all day
8 I have been living here for five years
9 You have been watching TV for long time
10 I have been waiting for Petr for an hour
Spring is a beautiful time of year. In the spring the snow melts,the grass is green, birds come from the south. The temperature in spring is above zero and therefore it's warm outside. I like spring, because in spring the days are sunny and bright, birds sing and the days get longer.