Complete the second sentence so that it means the same as the first. Use no more than three words.

1​I discovered that Mary and Roy are getting married.
​I ……………………… Mary and Roy are getting married.

2​I walked through the park and saw your cat.
​While I……………………… through the park, I saw your cat.

3​The police had no idea who stole the money.
​The police couldn’t ……………………… who stole the money.

4​They’re arresting that old man for stealing money from a bank.
​They’re arresting that old man because he ……………………… a bank.