1. 一战期间，德国同世界上好多国家开战。(be at war with)

4. They were having an 　　　　(argue)about their children.

3. He is an 　　　　(influence)politician in his country.

2. He 　　　　(stress)at the meeting that what he said was very important.

1. Guess what? Roy has handed his 　　　　(resign).

2.　　　 　I met her, she was working in a lab.

1. The little boy showed great interest because he did it　　　 .

4. The reading room can 　　　　1,000 students.

C. for the first time/the first time

3. Sea water 　　　　salt.

2. Twenty persons were injured, two children　　　 .