Fill in the blank with a suitable connector

The rice is only 6000 dong per kilo, ______ we bought 10 kilos.

The scientists .............. on this project try to find the solutions to air pollution.

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Has he found the key ............... he lost yesterday?

I can't ___________ what he's doing; it's so dark down here.

My mother knows the traditional _____ of the Southwest.

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IPM, Inc. will be working in collaboration with H&M Limited, which has considerable ------ in this field.

British Columbia is the westernmost Canadian province and the _______ province on the Pacific Ocean.

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The seller of the car is only willing to consider offers  ____________  $35,000.

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According to the Asia Real Estate report, Fukuoka is  ________  the most attractive Asian cities for real estate investment and development.

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Payments to the Wendell Lake Association will be considered late _________   they are received after January 1.

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The goal of the committee was to evaluate the company's bylaws and offer  _____________  for improvement.

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The new product was launched on the ------ that there was going to be a significant demand for it by the existing customer base.

It is_______ that the word ‘chess’ comes from ‘shah’, the Persian word for ‘king’ and that ‘checkmate’

Something's just ____ up, so I'm afraid I won't be able to make it this afternoon.

Working in over 150 countries, UNICEF  ...........  children with health care, clean water, nutrition, education, emergency relief, and more.

We would have sent him a Christmas card if we .................. his address last year.

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Tasty Coffee, Asia's largest coffee shop chain, today announced plans to expand its ------ into Vietnam.

Do you like _______ my wedding dress? 

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___________ of a reservation must be made at least 72 hours before your scheduled arrival date; otherwise, a charge will be incurred.

I gave him my e-mail address ................. he could keep in touch with me.

He_______ of the race after two laps.