We all ____ that the construction of the bridge will be finished next term. 

It takes ______ to talk to others on the team when that might expose some of your own weaknesses or ignorance.

Would it be ________ for you to pick me up at four o’clock and take me to the airport?

The government has been under growing pressure to ______ the causes of air pollution as smog frequently smothers the country's large cities．

As the most ________ spoken language in the world，Chinese is taught in many schools in Europe.