The course _______ for introducing multicultural America ranks first in the list of Popularity Courses among students this term.  

Our attitude toward our teachers should be _____, but not slavish or superstitious.

Not all parts of the interior (腹地) of Australia are easily _____, because it is very hot and not many people live there. 

Would you be _______ to pick me up at four o'clock and take me to the airport?

 Having said he would mend the clock, he discovered that he had not brought the _____ tools for the job.