Question

Me podrian ayudar

7 Complete the text with the words below.

since lived until had(x2) been
before kept have was

Frozen foods ………….. been part of our lives for so
long that it’s hard to imagine how we once ……………
without them. Like many other inventions,frozen food was
discovered by chance. A scientist called Clarence Birdseye, who
…………. working in the Arctic, noticed that people were eating fish
that local fishermen………….. caught several days ……………..
The freezing temperatures had ……………. the fish fresh.
Birdseye realised the importance of his discovery because
………….. then, there ……………. been no satisfactory way of keeping meat, fish and vegetables fresh for any length of time. His ideas and methods were adopted by food companies, and people have ……………. benefitting from this discovery ………….. then.

Answer 1

Respuesta:

Have

Lived

Was

Had

Before

Kept

Until

Had

Been

Since