2. Though they ( ) side by side for twenty years, the two neighbors are not very friendly.

A. 　 was asleep

B. 　 will asleep

C. 　 has been asleep

D. 　 slept

A. 　

B. 　

C. 　-cotx+C

D. 　cotx+C

A. 　 to help

B. 　 helping

C. 　 for helping

D. 　 that he helps

A. 　 put

B. 　 to put

C. 　 putting

D. 　 to be putting

A. 　 dying…lying

B. 　 dead…lied

C. 　 death…laying

D. 　 died…lain

A. 　 must be

B. 　 should go

C. 　 must have been

D. 　 must have gone

A. 　 on

B. in

C. 　 at

D. 　 for

A. 　党风建设

B. 　文化建设

C. 　思想道德建设

D. 　教育科学文化建设