1. —The government is ____________ plenty of money building the countryside.

—We are pleased with the government’s efforts.

A. costing                              B. paying

C. taking                               D. spending

2. —So you didn’t say hello to him last night?

—Well, I stopped and smiled when I saw him, but he _________ me and walked on.

A. ignored                              B. refused

C. denied                               D. missed

3. No matter what changes have taken place, nobody can _________ the fact that the experiment is a great success.

A. ignore                               B. ruin

C. observe                              D. recognize