It’s easy to learn a country’s culture if one is ____ with its language and customs.

Experts warn that global warming will cause climate changes, including more ______ floods, heat waves and droughts. 

It was really _____ of your brother not to play the guitar while you were preparing your lessons.

.My schedule is very _____right now ,but I’ll try to fit you in

______ and short of breath, Andy and Ruby were the first to reach the top of Mount Tai.