B4

Once I was travelling in Italy. It was a lovely day. I wandered along the street until I came upon some parasol-shaded tables which seemed to me very nice. I settled and opened my book.
(мне)

 I

B5

It was taking a long time for the waiter to arrive, but I was in no hurry. I was sure that the waiter would come soon.
(reported speech, т.к. мы переходим из прошлого в будущее.)

COME

B6

But finally, becoming impatient, I turned to signal for service and saw the neon sign. That was the worst moment ... I discovered that I was sitting outside a store selling garden furniture.
(bad – worse - the worst)

 BAD

B7

The Great Wall of China runs for 6,700 kilometers from east to west of China. It is one of the greatest wonders of the world.
(степень сравнения

 GREAT

B8

The Great Wall was built in order to protect the country form different aggressors.
(past simple passive, т.к. стена была построена, а не сама построила что-то)

BUILD

B9

The construction of the Wall began in the 6^th century BC and lasted until the 16^th century AD.
(past simple, т.к. действие произошло в определённый момент в прошлом)

BEGIN

B10

Since then, the Great Wall of China has become a Symbol of wisdom and bravery of the Chinese people and a monument to Chinese nation for many hundreds of years.
(present perfect, т.к. действие началось в прошлом и продолжается до сих пор)

BECOME