HUNG'S CLOCK DIDN'T RING. HE WENT TO SCHOOL LATE. A. HUNG WOULDN'...

9. Hung's clock didn't ring. He went to school late.

A. Hung wouldn't go to school late if his clock didn't ring.

B. Hung wouldn't have gone to school late if his clock had rung.

C. If Hung' clock hadn't rung, he wouldn't gone to school late.

D. If Hung's clock didn't ring, he would go to school late

Choose the answer that best fits in each gap in the text below

Most people associate the company Michelin with car tyres, guide books and stars for quality

restaurants. However, the French tyre maker is now helping ships to be more environmentally

friendly. The company has tested giant sails (10)_______ it hopes will make shipping greener.

Shipping currently produces a lot of carbon dioxide (11)_______ oil tankers, container ships and giant

cruise ships rely on fossil fuels to move around the world's oceans. Experts say the industry produces

around 940 million tons of CO2 annually, and that it is (12)_______ for about 2.5 per cent of the

world's greenhouse gasses. Michelin's engineers say their revolutionary new sails could reduce the

amount of CO2 produced by the shipping industry by 20 per cent.

Michelin is using the ancient technology of sails to (13)_______ the most urgent problem facing

the world today - climate change. Boats have used sails for 5,000 years to cross oceans or travel along

rivers. The new Michelin sails are different. They are inflatable. This means a ship's crew can fill the

sails with air to inflate them to full size. The sails can be deflated quickly if a ship needs to sail under

a low bridge. A company spokesperson said: "Our aim is to contribute (14)_______ the de-

carbonization of maritime transport." He added that the good thing about wind is that it is a free fuel.