We are working on
We're now working on the new model.

We have started the process of
We have started the process of designing another prototype.

The projects under development
The projects under development are secret so we will not discuss them.

We are involved in
We are already fully involved in phase B.

We remain occupied with
We remain occupied with the installation of the wiring system.

Fluctuate
Stock prices fluctuated throughout the session.

Unstable
The system is unstable and it might crash any minute.

Irregular
Growth patterns are irregular in Europe.

Erratic
His behaviour is erratic. He's happy one day and sad the next.

Vary
Figures vary all the time. It's impossible to draw a working model.

Stable
Prices will be stable for the whole season.

Remain unchanged
Nothing remains unchanged for very long.

Steadily
If we are lucky, sales will move steadily for the next couple of months.

Constant
If the number of unemployed people remains constant we will face trouble.

The same
Things are the same as one year ago. Does nothing ever change here?

Increase
Salaries should increase according to productivity.

Improve
Sales have improved and reached almost a million.

Raise
The government need to raise taxes to lower the deficit.

Rise
If inflation rises we will need to raise our prices.

Go up
The rates will not go up until the Central Bank decides they should.

Accumulate
We have accumulated around ten percent.

Escalate
Costs have escalated by a very small factor.

Accrue
Interest has accrued in my savings account.

Grow
The economy will grow this year.

Develop
Sales have developed more slowly than we had expected.

Boost
The advertising campaign boosted donations by twenty percent.

Shoot up
The cost of raw materials has shot up because of the increased demand.

Spring up
Absenteeism always springs up when there's an epidemic of flu.

Surge
Interest rates surged to twenty-five percent because of inflation fears.

Multiply
We need to multiply output by two within the next semester.

Fall
The accident rate fell substantially the last decade.

Decline
No one can stop the decline of newspaper advertising.

Descend
When will the cost of steel descend?

Climb down
Profits will continue to climb down if we don't control expenses.

Decrease
The decrease in productivity is due to mismanagement.

Diminish
If we diminish the amount of this component we might get a better mixture.

Weaken
Demand will surely weaken once everyone's heard the news.

Shrink
Advertising income will continue to shrink in the near future.

Wane
Robert's influence in the company will wane once people get to know him.

Slip
Why did revenue slip in the third quarter?

Dive
If the price of copper dives further we'll be out of business.

Plunge
Look at the curve. Deliveries plunged in May but recovered in December.

Plummet
Our reputation will plummet if the press find out that we made a mistake.

Sink
Can fees sink any deeper? I don't think so.

Collapse
The market has collapsed and it won't improve for a while.

If we choose
If we choose option A we could face problems with the workforce.

If you select
If you select the second alternative I'll leave the company.

By picking
By picking Model H instead of X we'll assure a supply of spare parts.

If we go with
If we go forward with Joel's proposal we might face trouble later on.

Opting
Opting for any of the alternatives would be much better than doing nothing.