He _____ tasted the mixture and give a smile.

— Look! Black clouds are gathering.— Yes. A heavy rain is ______  to come.

Running a company is not ______ a matter of hiring people—they also need to be trained.

The government has been accused of not responding ______ to the needs of the homeless.

My uncle’s house in the downtown area is much smaller than ours , but it is twice _______ expensive .