Is it D or N-D? Add commas if necessary.
N-D
The word 'smog', which was coined in the early 20th century, combines the words 'smoke' and 'fog'.
The 10.05 from London to Norwich___ is due to arrive at Platform 1 will call at Colchester, Ipswich and Norwich.
The 10.05 from London to Norwich, WHICH is due to arrive at Platform 1, will call at Colchester, Ipswich and Norwich.
I don't know any restaurants WHERE you can get a decent meal for under 15 pounds.
NO
The guest house at which we stayed when we were in Prague was right in the city centre.
The guest house we stayed at when we were in Prague was right in the city centre.
N-D.
In the late 19th century, London, which was known as 'The Big Smoke,' suffered almost constant foggy conditions.
We'll have the party next Friday ______ is the day ___ he comes out of hospital.
We'll have the party next Friday, WHICH is the day WHEN/THAT he comes out of hospital.
Sally is going out with someone WHO/THAT she met at Jason's party.
Sally is going out with someone she met at Jason's party.
The couple with whom we shared our table at lunch were from Poland.
The couple we shared our table at lunch with were from Poland.
The couple we shared our table with at lunch were from Poland.
At that time fog was mainly caused by the smoke which came from the coal fires burning in thousands of homes.
D
The golden eagle _____ eggs are stolen by unscrupulous collectors is now an endangered species.
The golden eagle, WHOSE eggs are stolen by unscrupulous collectors, is now an endangered species.
United's second goal, WHICH was scored in the final minute, won them the cup.
NO
The travel agency through which we booked our holiday was excellent.
The travel agency we booked our holiday through was excellent.
The worst recorded London smog was in 1952 when 4,000 people died in the week that it lasted.
D
What's the name of the girl ______ got married to Chris Small? Is it Louise?
What's the name of the girl WHO/THAT got married to Chris Small? Is it Louise?
Not surprisingly, we never got back the things WHICH/THAT we'd reported stolen.
Not surprisingly, we never got back the things we'd reported stolen.
The audio guide, without which we would have been lost, was available in several languages.
The audio guide, which we would have been lost without, was available in several languages.
Because of the poor visibility which was often less than one metre dozens died in road accidents.
N-D
Because of the poor visibility, which was often less than one metre, dozens died in road accidents.
Can you think of any reason _____ he might have done it?
Can you think of any reason WHY he might have done it?
I've decided I don't like the shoes WHICH/THAT I bought on Saturday.
I've decided I don't like the shoes I bought on Saturday.
The holiday, to which we'd looked forward to so much, was over too soon.
The holiday we'd looked forward to so much was over too soon.