| A | B |
|---|
| When I woke up today, the ground was wet. | It must have rained last night. |
| Mary was heavy last week. Now she's 35 pounds lighter. | She must have had a baby. |
| I saw a nice purse in the store. When I went back to get it, it was gone. | Someone must have bought it. |
| It's 8:30 PM. There are no students in the Evans cafeteria. | The cafeteria must have closed. |
| Last week Bill was sick. Today he's at work. | He must have recovered. |
| All the cars on the freeway are moving very very slowly. | There must have been an accident. |
| I don't see my neighbor Mr. Banks anymore. He was 95 years old. | He must have died. |
| My neighbor used to have one female dog. Now he has 7. | His dog must have had puppies. |
