1. detecting - обстоятельство;
2. keeping - часть составного сказуемого, watching - часть составного сказуемого;
3. controlling - определение.
Ответ:
Peter and Sally didn't go to cafe on Saturday afternoon
Sam didn't take photos for the newspaper last Friday
we weren't in the park yesterday
3.
Tev - vet
Xob - box
Aebzr - zebra
Ahyct - yacht
Ritan - train
4.
A, B, C, D
S, T, U, V
L, M, N, O
W, X, Y, Z
Первое - C
Второе - A
Третье - D
Четвёртое - B