The price of gas has greatly (increase) __________ in recent years.

The ________ of home computers has increased greatly in recent years.

The ____________ of smart phones has increased greatly in recent years.

A、popularity
B、familiarity
C、population
D、explanation

The housing price has been ( ), and has become increasingly unaffordable in recent years.

A、

soaring

adding 

ascending

plunging

In China, gas compressor manufacturing industry has experienced a rapid increase within these years.