Seaward of the continental shelves lies the Arctic Basin proper, which is subdivided into a set of three parallel ridges and four basins (also  _______ as deeps).

___________ are often used for laboratory experiments.

Choose the correct answer.

Thanks to pictures taken by satellites, deserts have not ________ a mystery in our time.

Choose the best answer among A, B, C or D that best completes each sentence:  …….  a detailed plan, the project was doomed from the start.

Choose the best answer:

People crowded the streets on a ............... Day to watch  .......... parades.

_____ sun and the moon both set in ____ west. 

Choose the correct answer in each sentence.

The Meteorological Department forecasts that there will be ________   two inches of rain between tonight and Sunday morning.

Choose the best answer:
Her birthday is ................ November.

Choose the correct answer in each sentence.

We provide not only home security systems but also commercial security,   _________ security cameras, access control, and fire monitoring.

Choose A, B, C, or D that best completes each sentence.

I am afraid that the company is in deep trouble. ________, we are going to make some people redundant.

Fill in the blank with a suitable connector

It is very late now, _______ she is still at her office.

Simon earned the respect of his friends when he determined to complete such a challenging task while others had already given up.

National Assembly Chairwoman Nguyen Thi Kim Ngan said that  ..............   , a large number of women and girls in various areas in the world are being discriminated and subjected to violence.

.............. had the curtain been raised than the light went out.

Choose the best answer:

He wants to .............. his room.

When I finish writing this composition, I’m going to ________and go to bed.

Choose the correct answer.

If the deserts are ________ managed, there may be troubles for scientific expeditions.

People believe there is a _________ between the two crimes.

Choose the correct answer in each sentence.

The increase in revenues was attributed to the ------ of the pricing structure.

Geoge wouldn’t have met Mary .............  to his brother’s graduation party.

Look up to see the clock tower with Big Ben, London’s famous _______ that rings every hour.