Question

Read the sentences and write the preposition into the gaps: 1. First ?????? all I’d like to welcome you to our meeting. 2. We study Spanish language, and ????? addition Spanish history. 3. ????? the one hand, we have many good reference, but…..

Answer 1

1) of
2) in
3) on the one hand

Answer 2

1. First of all, I'd like to welcome you to our meeting.
2. We study the Spanish language, and in addition, Spanish history.
3. On the one hand, we have many good references, but...