30．He added, “President Obama is going to do_____ he thinks is necessary to get our economy moving again.”

questionnaire, the subjects arequestioned whether they ________ no smoking in the public area.

Camels have three eyelids to ________ themselves from the blowing sand.

_____ is known to everybody, the moon travels round the earth once every month.

e me, could you tell me the time,please—Sorry, I don’t have a watch withme. — ________.