ng increasingly large is spreading worldwide,______ many problems such as traffic accidents and cold interpersonalrelationship

en she heard that she failed in theexam, she ______ her face with her hands.

He looked around and caught a man _______ his hand into a pocket of a passenger.[ ]

Exploring the polar regions is a _______ issue because it may destroy the ecological environment there.[ ]

The deserted island is only _______ by boat.