1. smoking … your health. (dangers, endangers)
2. greenpeace works to … awareness of the dangers that threaten our planet today.(promote, improve)
3. apes are on the … of extinction (edge, verge)
4. losing twenty million acres of tropical rain forests every year is a …. (disadvantage, disaster)
5. tigers are … and killed for their body parts which are used in medicine. (hunted, haunted)
6. oceans are currently a big dumping ground for tons of toxic… and sewage. (waste, packing)
7. there are no more than two hundred and fifty … of sharks in the world.(species, kinds)
8. storms and heavy rains often cause great … to property. (damage, loss)
9. some factories and plants … poisonous substances into the atmosphere.(increase, release)
10. people are not doing their best to … an ecological catastrophe. (avoid, prevent)
I was reading at 7 p.m. yesterday.
We were singing a song from 6 till 7p.m. yesterday.
He was playing tennis the whole day yesterday.
She was watching TV for 4 hours yesterday.
They were learing new words since 5 p.m. yesterday.
Was I reading at 7 o'clock yesterday?
Were we singing a song from 6 till 7 yesterday?
Was he playing tennis at that time yesterday?
Was she watching TV the whole evening yesterday?
Were they learing new words at 5 p.m. yesterday?
I wasn't reading at 7 o'clock yeaterday.
We weren't singing a song from 6 till 7 yesterday.
He was playing tennis at that time yesterday.
She wasn'y watching TV from 4 till 6 p.m. yesterday.
They weren't learing new words the whole evening yesterday.
.