1. It is not rare in _______ that people at the age of forty are going to _________university for further education.

A. 90s; the          B. the 90s ; /     C. 90s; a              D. the 90s; the

2. Much attention should be paid _______ the wild animals as many of them are dying out.   

A. protect                          B. to protect  

C. protecting                                       D. to protecting