Английский помогите

  • 1.Завершите предложение соответствующей формой причастия I.
    HAVING GIVEN a promise he couldn't fail us. (давать) /
    ___ people of the date of the conference we had to send them invitations. (сообщив; to inform - сообщать)
    2.Выберите правильные формы причастий.

    The device {producing, produced} was powerful.
    The engineer {represented, representing} this factory is a good specialist.
    3. Завершите предложение соответствующей формой инфинитива.
    Signals TO BE MEASURED must be strong enough. (которые будут измерены; TO MEASURE– измерять)

    __by such a good specialist was a great advantage.(быть проинструктированным; TO INSTRUCT - инструктировать)
    4.Поставьте глагол в форму инфинитива.
    He didn't want TO BE ASKED that question. ( ASK – simple passive)

    __ with mercury is dangerous. ( WORK - simple active)
    5.Выберите верный вариант.

    The researches ... may lead to important discoveries.
    being done
    doing
    having done

  • 1. having informed...
    2. produced, representing
    3. to be instructed
    4. to work
    5. being done