1 Bell introduced the telephone in 1876
2 You have to make sure children don't play with matches
3 Kitchen isn't a suitable place to play
4 My grandfather used to live on a farm when he was young
5 What does your mother look like?
6 THe weather isn't warn enough for us to swim today
7 We must be there between 8.30 and 9.15
8 Peter isn't old enough to see the horror film
9 My father used to walk in the park when he was young
10 Lan was sick, so she didn't go to school yesterday
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