The ____ of the outbreak of the disease is still unknown.

Choose the best answer:

If you don’t know how to spell a word, you ______ look it up in the dictionary.

 In general, my father doesn’t mind _________ the housework, but he hates to do the cooking 

Clothing made of plastic fibers has some certain advantages over  ..............  made of natural fibers.

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I distinctly remember ................. you. I gave you $ 20.

___________my father sat down for lunch than there was a knock at the door.

Choose the correct answer in each sentence.

To enroll in any course, either complete the online form   __________ register in person at the Greerson Learning Center.

Poplar Mills Inc. has been purchasing more arable land, hoping to increase not only production but also its ............... in the nation’s grocery stores.

Choose the best answer among A, B, C or D that best completes each sentence: Many people said that they could not share their experiences and opinions so quickly and _____ if there weren't Internet connectivity.

Choose the best answer: 
 Could you help me, please? - ___________.

Choose the correct answer in each sentence.

Aiko Arts plans to host a reception ------- the artist, Remco Keeman.

______- is natural environment in which plant or animals live.

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The allocation of funds to local schools is______________    on the number of children living in the district.

Tom went to work although he didn’t feel very well.

Choose the correct answer in each sentence.

Anyone who participate  _____________  the city's Annual Banking Competition will recieve a coupon from Fresh Supermarket.

After ten years in ................., Ravensdale Fiduciary Firm is expanding its factories to Shanghai, Hong Kong, Tokyo, Seoul, and Singapore.

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Tính từ “tích cực” trong tiếng Anh là từ nào?

We were quite impressed by the _______ students who came up with  the  answe  to our question almost instantly.

 Installing is firewall is one method of trying to protect against_______.

Since the Pembroke Opera House has ................ parking facilities, audience members are encouraged to use the nearby rapid transit system.

Choose the correct answer in each sentence.

The rebate offered by Genton Vitamins expire  __________  six months.