However, some scientists argue that the historical evidence shows that over time the Earth heats .........  and cools  ..........  naturally.

______ 1900, water polo has been in the program of the Olympic Games.

There’s a ___ of blackbirds at the bottom of the garden.

Marissa tried to __________ her badly recorded CD __________, but the music shop wouldn’t exchange it as she had lost her receipt. 

The ….. between this computer and the others is good. 

He was away for two months but if he studies hard, I’m sure, he will soon __________ the group.

Every country has its (1) _________ traditions, some of which have existed for centuries. In my opinion, we should do everything possible to preserve them.
Some people think that in today's high-tech world traditional celebrations are too old-fashioned and (2) _________ to our lives. However, (3) _________ such as Carnival, are important, as they bring communities together and make us think about other people and not just computers. 
(4) _________ argument against traditional festivals is that they are expensive to organise. To some extent this is true, particularly when there are firework (5) _________ or parades. On the other hand, it is a small price to pay for brightening up our lives with entertainment and colour. (6) _________, celebrations like the 'Fallas' in my home town of Valencia (7) _________ many tourists and their money.
Finally, although I agree that some traditional customs (8) _________ their original significance, they can provide an opportunity for us to learn about our past. For example, Bonfire Night teaches British children about a particular period of their country's history.
To conclude, traditional celebrations are (9) _________ great pleasure and interest, and they are certainly (10) _________ keeping.
(3)...............

Identify the error in each sentence:Most sedimentary rocks start forming when grains of clay, silt, or sandy settle in river valleys or on the bottom of lakes and oceans

He used all his …. to force the door open. 

He did not do well at school and left with few _______ qualifications. 

Prime Minister Malcolm Turnbull is trying  to ............... himself with  US President President Donald Trump and impress Australian voters.

Identify the error in each sentence: The science of medicine, which progress has been very rapid lately, is perhaps the most important of all sciences.

Though being made with great carefulness, all his plans for starting his business fell ________.

 ____    , the accident would not have happened yesterday.

Two ground-breaking reports on lifelong learning by UNESCO     in 1972 and 1996 articulated fundamental principles of lifelong learning.

Dinosaurs ............. believed .............. out millions of years ago.

Chọn đáp án đúng điền vào chỗ trống: A defensive player may only hold, block or pull a/ an _______ who is touching or holding the ball.

Chọn đáp án đúng để hoàn thành câu:

The burglar _______.

Chọn đáp án đúng để hoàn thành câu:

I have never taken part in any water sports _______ I cannot swim.

It is possible  .........   may assist some trees in saving water in the winter.

The meeting was ____________, and all left satisfied.