5) play - tennis, ice hockey, volleyball.
go - cycling, rollerblading, skateboarding.
do - athletics, gymnastics, karate.
6) play bascketball, go skiing, do aikido.
7) 1 - play, 2- a DVD, 3 - surf, 4 - friends, 5 - go, 6 - a musical instrument, 7 - watch, 8 - a club.
8) 1 - plays, 2 - watches, 3 - plays, 4 - surfs, 5 - do, 6 - plays, 7 - goes, 8 - goes.
9) read - a book, a newspaper, an article. go to - the museum, art gallery. play - bascketball, volleyball, games. watch - a DVD, a TV, a film. listen to - the music, the radio, the news.
Little-less-the least
sad-sadder-the saddest
nice-nicer-the nicest
windy-windier-the windiest
green-greener-the greenest
merry-merrier-merriest
warm-warmer-warmest
happy-happier-happiest
Удачи))
1 My dad is painting the house today.
2 A: What are you doing, Sam?
B: I'm writing an email to my friend.
2x-5=-1 при х=2
Находим
f (-1) = f (2·2-5) = 22-3·2+5=3
или так:
замена переменной
2 х-5=t ⇒ x = (t+5) / 2
f (t) = ((t+5) 2/4) - 3· ((t+5) / 2) + 5
f (t) = (t2+4t+15) / 4
f (-1) = (1-4+15) / 4=3