______, he always makes time for his family.
A. No matter he is busy        B. No matter how busy he is
C. However he is busy         C. However busy is he

The one concern for parents and students is ______ if the student pursues their university education in a foreign country, the student will not have the opportunity to establish social contacts in China.

Canada has vast areas of wilderness, from the Arctic north, _______ average winter temperatures are usually -20 ⁰C, to the border with the USA in the south, _______ is said to be the longest border in the world not defended.

   in today’s newspaper is that the American young man has won eight gold medals in the Beijing Olympic Games.

           he is well again, he can go on with his English study.

The points put forward at the conference          the government should pay more attention to the poor were widely accepted.

It was at the shopping center ______ Mary and I had an appointment ______ I lost my necklace.

The reason ______she didn’t come to school was_____
she had to look after her sick mother.

His parents wanted him to be a doctor, _____ they thought was a steady and well-paid job．

The square box has a door,      there are some buttons.