Downward Movement

The chemical industry has never seen such a swift ...... in our country before.
1. decrease
2. decraese
3. decriese
4. decraesee
Some giant companies have never had to ...... decreases in either production or sales.
1. suffer
2. suffere
3. suffar
4. surf
Mr Benning's just filed a report on a decrease ...... 2 per cent in the sales of BMW cars in our stores.
1. of
2. in
3. on
4. about
A further decrease ...... revenues could mean that the whole plant will be relocated to a different area.
1. in
2. on
3. about
4. at
We have witnessed a tremendous decrease ...... productivity at your department. What's going on around here, Mr Fobbles?
1. in
2. on
3. of
4. about
I suppose a decrease ...... the mortality rate can only be achieved in our country by stopping the useless fighting which has already cost so many lives.
1. in
2. on
3. of
4. at
Some of the investigators report that there's been a steady decrease ...... the application of security measures around your plant, Dr Brown.
1. in
2. about
3. at
4. on
A further decrease ...... the prices of crude oil cannot be expected right now.
1. in
2. on
3. about
4. at
After a few new policemen joined the force, we saw a gradual decrease ...... petty thefts and burglaries.
1. in
2. on
3. at
4. of
Unfortunately, the company has seen a decrease ...... almost 4.2 per cent in the sales of most products on offer.
1. of
2. in
3. on
4. at