Read the extract below.

Thiel’s “fight” involves investing millions in biotechnology and artificial intelligence in what he has called “the immortality project”. His investment firm Thiel Capital has, according to Inc, expressed an interest in a company called Ambrosia, which is running a trial where individuals can pay $8,000 to receive a blood transfusion from a teenager in the hope that it will restore some youthful vigour.

The highlighted relative pronoun “which” above refers to

Choose the alternative that correctly fills the blank spaces in the sentences below.

Welcome! ______ is my new house. _____ houses are bigger than ______ we saw yesteday I parked my car near _____ tree. Can you see it?

Choose the alternative that correctly fills the blank spaces in the sentences below.

I downloaded the file _____ that website.

Francis will be back ____ 5 o’clock.

Susan goes to school ____ bus.

He will pay the water bill ___ Friday.