The average life expectancy of the Red Indians is ________.

_____all the representatives still not there ，the meeting was postponed for several hours.

In 1900, the energy derived from burning petroleum was only four percent ______ of coal.

The New Frontier and War on Poverty were put forward respectively by ________.

It was not until she had finished all her work_____.

When you're_____ a crisis, it often helps to talk to someone.

Since 1971 the Canadian government has adopted a policy of ________, recognizing that cultural pluralism within a bilingual framework is the essence of the Canadian identity.

The boy complained _______ a pain in his stomach.

The students are required to ________ the main ideas of the article in their own words.

I understood from her that you undertook other important work ______.