آزمون آنلاین انگلیسی 3 - درس سوم | آزمون شماره 281

....................................... principally consist of carbon and hydrogen bonds like coal , oil and natural gas.

Clean towels were in short ................ , rooms needed quick cleaning, and Cynthia, Maria, and Dean had their hands full.

The new recycling plans are ........................... friendly. They can save nature.

. As she passed the restaurant her stomach rumbled, as if to  .............................. her she hadn't eaten since lunchtime

Isn't it strange how babies can .................................... a kind of pictures without any training ?