The railways ___ great changes to people's lives.

• brought about

• brought in

• brought over

• brought up

The discovery of gravity ___ by chance

• came about

• came in

• came over

• came up

Computers ___ 5% of the country's commercial electricity consumption

• account

• account for

• account on

• account up

Discoveries in genetics could ___ great healthcare advances.

• lead about

• lead to

• lead

• lead over

Neuroscience has ___ understanding cognitive development.

• contributed

• contributed with

• contributed to

• contributed as

Researchers have___ pollution as a potential cause.

• ruled

• ruled out

• ruled over

• ruled away

How much more of the nation's resources will be ___ before the problem is solved?

• used about

• used away

• used over

• used up

What research has been ___ in Spain?

• carried

• carried about

• carried away

• carried out

How can science help ___ poverty?

• do up with

• do away with

• do out with

• do with

Will fuel powered cars really ___?

• phase about

• phase away

• phase out

• phase over