Здравствуйте) Помогите пожалуйста найти неличные формы и определить их)

Find non-finite forms, underline and determine them. Translate the sentences.
On receiving the answer of the firm we handed all the documents to our legal adviser.
The goods are unlikely to arrive at the end of the week.
The students who were translating an economical article on the examination were allowed to use a dictionary.