Poprawa zdań

Witam

Proszę o poprawę zdań

1 What did your friends give you for your last birthday?
2 Sam has never flown on a jet plane before.
3 Since last year they have sold hundreds of their computers.
4 Unfortunately, the weather haven't improved since March.
5 Did you think hard before choosing your career, dad?
6 Eva's parents got married when they were both thirty.
7 I'm awfully tired I haven’t slept well since our neighbours have started renovating their flat.
8 Did you play with such unusual toys. ? – nie bardzo ma to sens 
9 In the fifties, children didn't play with such unusual toys.
10 Since when has Tim driven the company car?.
+11 Paul last phoned me ages ago.
+12 I haven't paid my bills yet. I'll do it soon.
13 This is a bad dog. It bit me some time ago.
14 You didn’t wear that cap last winter.
15 Have the Greens ever rented their flat to anyone?.
16 It was so hot for two weeks now.
17 Marks remembers he didn’t behave well as a child. – tu by bardziej pasowało chyba remembered gdyż następstwo czasów powinno być
18 I have never used such complicated program before.
+19 How many windows have you washed since morning. Gill?
20 There was a big storm in the area for five days.

Bardzo dziękuje za pomoc.

1 ok
2 ok.
3 ok.
4 Unfortunately, the weather 'haven't' (tutaj potrzeba odpowiednik do 3os.l.poj -the weather-it) improved since March.
5 ok
6 ok.
7 I'm awfully tired I haven’t slept well since our neighbours 'have' (niepotr) started renovating their flat.
8 Did you play with such unusual toys. ? – nie bardzo ma to sens  ale zdanie jest ok.
9 ok
10 ok.
11 ok.
12 ok
13 ok.
14 ok.
15 ok
16 It 'was' (nie, tutaj 'has been') so hot for two weeks now.
17 Marks 'remembers he' (wg mnie to remembered that he) didn’t behave well as a child. –
18 I have never used such A complicated program before.
19 How many windows have you washed since (the) morning. Gill?
20 ok.

W 11. bym zminil szyk. W 16, adverb so. /?/