III. Раскройте скобки, употребив правильную глагольную форму.
Everybody (1 — know) today what hot dogs (2 — be). Hot dogs (3 — be) popular for a long time. The first ones (4 — sell) by street vendors in the 19th century. They not (5 — know) then, of course, that they (6 — be) hot dogs. They (7 — be) just a sausage in a bun.
In the 1930s Harry Stevens (8 — start) to sell sausages in (9 — heat) buns, (10 — add) mustard and relish. He (11 — think) they (12 — be) very funny.
A famous sports cartoonist, who (13 — call) himself Ted, also (14 — think) they (15 — look) funny and (16 — draw) a picture of a dog in a bun. Ted (17— be) very good at (18 — draw). He (19 — name) the sausages «hot dogs,» and the name soon (20 —become) very popular. But there (21 — be) a problem. Makers of sausages (22 — think) people (23 — think) they (24 — make) of dog meat and therefore not (25 — eat) them. So for some time «hot dogs» not (26 — use) in advertisements.
But hot dogs (27 — survive) this. Soon Nathan’s restaurant in New York (28 — put) hot dogs on their menu. They (29 — be) a great success and (30 — become) famous in the whole of New York.
They (31 — be) still popular in many different places, they can (32 — buy) in parks, fast-food restaurants and cafeterias.
Since the time they first (33 — appear) hot dogs (34 — become) favourite food of those who (35 — camp) out or (36 — need) fast food for other reasons, though most people not (37 — know) why they (38 — call) hot dogs or who (39 — give) them that name.

1)knows2)are3)were4)were sold5)didn't know6)will be7)were8)started9)heated10)adding11)thought12)were13)called14)thought15)looked16)drew17)was18)drawing19)named20)became21)was22)thought23)were thinking24)are made25)didn't eat26)didn't use27)survived28)put29)were30)became31)are32)be bought33)appeared34)became35)was camping36)needed37)don't know38)call39)gave