Сочинение-рассуждение помогите сделать

Put the verbs given in brackets in the appropriate tense. Translate the sentences:

Important findings (to obtain) by the investigator before he finished his observations. 2. All the observations (to analyse) and (to summarize) by the physiologist by the end of his experimental work next month. 3. The patient (not to feed) since early morning because he will be operated on today.

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