Fill in the blanks with suitable prepositions.

1. The company is proud to be in the vanguard         scientific progress.

2. They apportioned the land         members of the family.

3. He felt he had been trapped         accepting the terms of the contract.

4. Her answer amounted         a complete refusal.

5. If we go to war, innocent lives will be put         risk.

6. The public should not be deceived         buying inferior goods.

7. Shall I add your name         the list? 

Answers
1. of 2. among 3. into 4. to 5. at 6. into 7. to