Complete the task

Read the sentences and choose the sound of the words in bold.

Listen, class! We should walk fast. /ɑ:/

Mark, what do you want to ask? /ɑ:/

1. The shark is swimming in the dark. [/ɑ:/|/ɔ:/]
2. A dog can bark, but not a lark. [/ɑ:/|/ɔ:/]
3. Where's my ball? Behind the wall. [/ɑ:/|/ɔ:/]
4. I'm small and short but never bored. [/ɑ:/|/ɔ:/]
5. Hey, what are you doing there? It's my garden and my armchair! [/ɑ:/|/ɔ:/]