Điền giới từ thích hợp

Điền giới từ thích hợp 
1 Lan sits ...... Hoa and Nga
2 There is a pond.... the right ...his school
3 The schildren always stay ... home ....Sundays
4 The boys usually play football ...school 
5 My father travels to work .....car
6 Everyday, I go to school ...foot .....my friends
7 She is cooking ... present
8 What are they doing ...... the moment ?
9 What would you like to be .... the future? 
10 My house is different ... hers
11 Tom is good ... english , but he is bad ... maths
12 I am never late ...school
13 Peter lives ... his family ...... the city
14 He often goes to bed ... 9.30 p.m
15 There is a garden .... front .... the house
16 ....... chiristmas Day , children often receive many gifts
17 We have english ... mondays and thursdays
18 My house isn't far ...... school 
19 swimming is good ...... you
20 They will go camping ... the mountains
21 You should take part ..... outdoor activities instead ....... watching TV