| A | B |
| don't | ___ be late for dinner. |
| we'd | ___ better be going now. |
| wouldn't | I ___ do that if I were you. |
| there's | ___ plenty here for everyone. |
| we're | ___ going to have a big party. |
| you're | ___ invited to our party. |
| doesn't | The project ___ have a deadline. |
| I've | ___ done some amazing things. |
| here's | ___ the book you've been looking for. |
| wasn't | He ___ late. |
| shouldn't | You ___ do that. |
| couldn't | I ___ do that if I tried. |
| where's | ___ my favorite shirt? |
| hadn't | If I ___ been late, I would have seen the whole movie. |
| aren't | ___ we there yet? |
| they're | ___ the nicest people I know. |
| it's | ___ been a long time since I last saw you. |
| we've | ___ been waiting all day. |
| when's | ___ dinner? |
| haven't | I ___ been here since last year. |
| it'll | ___ be a long time before that happens. |
| who'll | ___ be going to the party? |
| might've | If I had know, I ___ done things differently. |
| mustn't | We ___ be late for school. |
| won't | I ___ forget my homework. |