Relative Clauses (subject)

The scientists studied people ...... slept only four to six hours.

• who

• which

There are people who ...... only about 6 hours of sleep.

• need

• needs

Combine the sentences by using a (subject) relative clause.

The scientists studied mice. The mice had a gene mutation.

It's a gene ..... (control) sleep in animals.

• who/controls

• which/controls

• who/control

• which/control

Which sentence is correct?

• The scientists studied mice which had a mutated gene.

• The scientists studied which had a mutated gene mice.

Put the words in the correct order.

things / the expert / surprised her / many / learned / which

One idea ........ (have) helped many people is for them to go to bed only when they are tired.

• which/has

• which/have

• who/has

• who/have

The mice ..... had the gene mutation slept less at night.

• which

• that

• who

Which word is a relative pronoun in this sentence?

I know a woman who sleeps only 4 hours a night.

• I

• woman

• sleeps

• who

Which word does the relative pronoun replace in the relative clause?

I know a person who has the hDEC2 gene.

I know a person. She has the hDEC2 gene.

• subject

• object

• verb