The radiation amount of a mobile phone for two half-hour periods per day is equal to _______ to an X-ray for ten seconds.
10,000 dollars is a large sum of money,but it is still ______than we need for a new house
Food safety is ________ important, so the government spares no efforts to prevent food pollution.
The increase of the number of the students makes the limited computers not ______ to each student.
It is ______ to spend money in preventing illnesses by promoting healthy living rather than spending it trying to make people ______ after they are ill.
Attention, coffee lovers! We have for you, the best coffee machine _____ invented.