Answer:
1. I had to work during the summer holidays, from the beginning of July until the end of August.
2. We got married in 1970, so we have been married for more than twenty years now.
3. I should have handed in my homework a week ago. My teacher isn't very pleased. She says I must finish it by six o'clock on Monday at the latest.
4. The last time we went to England was in 1983, that's nearly ten years ago. We haven't been back since then even though our friends have invited us.
Explanation:
Prepositions are words we use to connect different nouns, pronouns, and phrases in a sentence and express what kind of relationship is present between them. Depending on what this relationship is like, prepositions can be prepositions of time (e.g. <em>during, for, until, since, ago),</em> place (<em>on, in, behind, above</em>), movement (<em>to, towards, into, through</em>), agent (<em>by</em>), instrument (<em>by, with, on</em>), possession (<em>of, with</em>), etc. One preposition can have multiple meanings.
