PDF chapter test TRY NOW

A list of words is given in a box. Use appropriate words to fill up the blanks in the following statements.
 
Answer variants:
mixture
road
wind
cylinders
combination
air
water vapour
direction
bottles
oxygen
1. A weather cock shows the
 in which the air is moving at that place.
 
2. Mountaineers carry oxygen
 with them, while climbing high mountains.