1)you can't use the computer
2)you can't walk in the street
3)you can't go swimming
4)you can't go skiing
a) because there is a food.
b) because there is a storm.
c) because there was an avalanche.
d) because there is no electricity​

My school life is wonderful. there are lots of concerts, performances and sport competitions in our school. my classmates and i often take part in different school events. i have a lot of friends in my class.   our teachers are kind and intelligent and my classmates are smart and friendly. i like my school.

1.i see the plane in the sky.

2. a lot of factories polute our atmosphere.

3. sun is the biggest star in our galaxy.

4. people went to the moon in the 20th century.