For there _____ successful communication, all present must be attentive and get involved in the discussion.

单选题

For there _____ successful communication, all present must be attentive and get involved in the discussion.

答案解析

单选题

In spite of the wide range of reading material specially written or _____ for language learning purposes, there is yet no systematic program for the reading skills.

答案解析

单选题

_____ there is smoke, there is fire.

答案解析

单选题

The author of the report is well _____ with the problems in the hospital because he has been working there for many years.

答案解析

单选题

There is no success _____ hardship.()。

答案解析