I think we need to investigate the reasons why  this accident happened. - look into, Just connect the kettle to a power supply and turn it on.  - plug in, My essay is developing but it isn’t fnished yet. - coming on, They need to do more experiments to check that everything is OK. - carry out, I can’t understand why it isn’t working. - figure out, Is that the best suggestion you can think of? - come up with,

Optimise B2 U3 Phras Verbs Matching

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