1. to connect

2. to remove

3. to throw

4. to take

1. Cohesion : Coinside

2. Coalesce: Combine

3. Collapse : Collide

4. Conceal: Concur

1. He is an erudite professor of English.

2. He is a professor with outstanding knowledge in English.

3. He is at home in English.

4. He is a professor of English with vast understanding.

1. The all arrangements have been made by the city planner.

2. All the arrangements are making by the city planner.

3. The all arrangements had been making by the city planner.

4. All the arrangements are being made by the city planner.

1. They asked him to visit their office today.

2. They requested him respectfully to visit their office that day.

3. They addressed him Sir and requested him to visit the office today.

4. They told him in humble manner to visit their office that day.