Independent innovation has brought us a________in profits,40% higher than in the traditional way.

The government decided to tear down the old bridge, which was not strong enough to allow the ___ of heavy vehicles (车辆).

Believing in people is the key to motivating people to ______ their potentials. 

I wasn’t complaining. I         expressed my surprise because I had never seen this happen in that case before.

Not many people __________ the idea that money brings happiness.