Grammar check - relative clause and linking ideas

My father lives in a small house full of ornaments. This makes it really difficult to clean

=> My father ___________________________

• lives in a small house full of ornaments, which makes it really difficult to clean

• who makes it really difficult to clean, lives in a small house full of ornaments,

Some students take a year out before university. This allows them to work or travel

=> Some students ___________________

• who allows them to work or travel, take a year out before university,

• take a year out before university, which allows them to work or travel

What is correct about the defining relative clause?

• identify the thing that you are talking about

• give additional, non-essential information

Does a non-defining relative clause need a comma?

• Yes, but sometimes

• Not at all

• Definitely yes

• No, but sometimes

'That' can be used to replace 'who' and 'which' in

• Defining relative clause

• Non-defining relative clause

Why is a comma used in a non-defining relative clause?

• to separate relative clauses from the main clause

• to leave out the relative pronouns

• to refer to a single noun phrase or to a whole sentence

• to give additional, non-essential information

You may have a neighbour. The person that you can rely on

=> You may __________________________

• You may have a neighbor whom on you can rely

• You may have a neighbor on whom you can rely

We were in a situation _____ there was no easy solution

• which

• who

• where

• when

The marriage rate remained stable in 1980 but fell to 2 million by the year 2000._________, the divorce rate peaked in 1980, at nearly 1.5 million divorces, before falling back to 1 million at the end of the period.

• In contrast

• In addition

• Although

• As a result

People in developing nations attended school for an average of around 3 years, with only a slight increase in years of schooling from 1980 to 1990. ________, the figure for industrialised countries rose from nearly 9 years of schooling in 1980 to nearly 11 years in 1990.

• Therefore

• Consequently

• Additionally

• On the other hand