Read the GRAMMAR FOCUS. Which forms of be complete the sentences correctly? Then check your answers in the text. GRAMMAR FOCUS Advanced passive forms • Passive forms with present or past modal verb structures. ... no electronic noises could be heard through the night. switched off, ... even when they should 2 they were bleeping ... • Passive forms with verbs that take two objects, i.e. a person - usually the indirect object, and a thing - usually the direct object (give | Focus 4. Second Edition. Student's Book | 2/102