The reason why this kind of machine is popular with users is that it will work in ______ temperature.

Would it be ______ for you to pick me up at four o’clock?

— Did you look up the time of planes to Beijing? — Yes, the earliest plane is       to leave at 5:30 am.

David has won the first prize in singing; he is still very excited now and feels________ desire to go to bed.

Your letter will get       attention! They know you’re expecting the answer.