On the table ................ (is, are) a pile of books which he consults from time to time.

Friendly and ______ , he invariably consults with people around him before making decisions.

I suggested that he ______ a doctor. A: Should consult B: consulted C: should have consulted D: consults

Friendly and ______ , he invariably consults with people around him before making decisions. A: considerable B: considerate C: considering D: conservative

The captain of a multi-crew aircraft rarely consults other members of the crew and discourages any verbal input from them in the course of a flight. This situation could be described as（ ）