Choose the best answer:
The medical authorities warned everyone not to drink the water without first ________ it.

Choose the option A, B, C or D that best completes each sentence:  Jack ……… the door.

Choose the option A, B, C or D that best completes each sentence: The train …… half an hour ago.

Choose the best answer: 
While I (do)……………….. my housework, my doughter (play) ……………….. piano.

Choose the best answer:
We greatly appreciate your ------- in preparing your office for the upcoming move

_______here for hours and I feel tired

Mark the letter A, B, C, or D on your answer sheet to indicate the undelined part that needs correction in each of the following questions:

Their big day requires a lot of preparation, such as designing costumes, choose guests and reinforcing security.

Choose the best answer: 
Wildlife is under threat from many different kinds of human activities, from directly destroying habitat to spreading invasive disease.

Choose the best answer:
A colourful design was ____ on the sleeve of her blouse

Choose the best answer:
He still ____________ the dream of playing professional soccer.

Choose the best answer:
Galaxy Health Club offers a 20 percent discount for all classes ------ November.

Choose the best answer:
Use coupon code SAVE20 to purchase ------- perfume or cologne for 20 percent off

Choose the best answer:
We might have failed if you _______us a helping hand

Choose the best answer:
Why doesn’t he fancy ________ with us to the pub?

Choose the best answer:
Our car ____________________ $1,500 in the first year we owned it.

Choose the best answer: 
This shirt is _______ that one

Choose the best answer:
We tend ____________ cold winters and warm, dry summers in this part of the country

Choose the best answer:
California employers should familiarize ----- with significant labor and employment laws passed by the Legislature in 2000

Choose the best answer:
She felt that travelling had greatly ____ her life.

Choose the best answer: 
Josh ____ televisions for 4 hours since he arrived home.

Choose the best answer:
The bomb went off, and everyone in the hall __________ the exit in panic