Can we say,
1 The author launches a book fair.
2 His hobby is rearing pets.
3 He likes keeping toys car / toy cars.
4 He saw a blind man wanted / want to across the road.
5 Bees are flying on / over the flower.
6 They started to feel hungry.
7 She help them to sign (the) autographs.
8 She signs autographs to / for / with the fans.
9 She signs her name on her autographs with her fans.
10 They can take her autographs.
11 Many people get autographs from her.
12 The company launches new book fair / new books for her.
13 When she has finished her work, she will send her scripts to the publishing company to be published.
14 Before the show is started at 8 p.m. , all contestants were calm. (should I put "comma" after 8 p.m.?)
15 The flat has eleven storeys / stories.
16 They like to play (with the) jigsaw puzzle / puzzles.
17 They don't like to eat dried / dry chillies.
18 He had a stomach ache / stomachache.
19 Please contact her on-line / online / through phone.
20 The man wears a helmet to protect his head when he rides (on / in /at /onto) (the ) motorcycle.
21 The truck gives out some / many / plenty (of )dirty smoke.
22 They heard a noise / some noise from the kitchen.
23 His motorboat /motor boat can move very fast with a good engine.
24 His motorboat /motor boat can move very fast because it has a good engine.
25 I had gotten a free golf lesson
26 We were given four free on meal vouches.
27 He was happy on / in / at the night.
28 The motorboat moves fast which has a good engine.
29 We were getting hungry after a half hour.
30 We need a helmet to protect our head when we are riding on a motorcycle.
31 We put on the seat bealts when ./ while we are in the car.
32 He puts on the jacket on / in cold weather.
33 He watches the cartoon show every night.
34 They like to read her book when they have free time.
35 They like to read books at / on / during the free time / times.