It was _____ a difficult question that they couldn't explain.

We didn’t buy ________flowers yesterday. 

The chemistry lab managers are concerned that new employees have not been trained ................. in the latest emergency procedures.

After ................. interviewing more than fifty candidates for the position of manager of the Biotechnology Department, the committee chose Dr. Alan Liu.

Choose the correct answer in each sentence.

Unfortunately, replacing the copy machine will cost more than _____________   had anticipated.

Choose the best answer A, B, C or D to complete the sentence.

Smartphones are a great example of the ____ of artificial intelligence.

You have been selected by our board as the next...............of the Independent Films Award.

Choose the correct answer in each sentence.

This discounted train ticket is ______________   only at certain times of the day.

There are some job .................... ads in the company newsletter in case any employee might know someone who can fill those positions.

You shouldn’t walk around with ____ feet. The floor isn’t very clean.

Choose the best answer to complete each sentence

The _______ effect of the new policy is that the farmer is now working for himself, and not for the state sake.

Choose the best answer:
Mr Thanh has  ___________ days off than Mr Jones.

“What’s the answer to the problem?” – “I don’t know and even __________, I wouldn’t tell you.

Choose the best answer:
Who will............ the children while you go out to work?

Many plants and animal species are now on the _______ of extinction.

Empty boxes should be placed in the stockroom for........

Our building maintenance staff will ................ the recycled paper products each evening and transport them to the local recycling facilities.

Choose the correct answer in each sentence.

Patients should call the emergency line immediately if they experience ------- changes in temperature.

Choose the correct answer in each sentence.

The city hosted a display of ----------- fireworks to celebrate the 1th anniversary of its founding.

 I don’t have ________relatives in these strange place.

Lohman added that staff members have made significant changes to the reservation system, and the ............. system will increase customer satisfaction.