Choose the best answer:
I'm very ______ to you for putting in so much hard work.

Hardly he had got downstairs when the phone stopped ringing yesterday afternoon.

Choose one word or phrase marked A, B, C, or D that best complete the preceding sentence:

We took many pictures__________ the cloudy sky.

Since fireworks are dangerous, many countries have laws preventing business to sell them.

In the 1800’s botanist Asa Gray worked to describe and classifying the plants found in North America.

Choose the best option to complete the sentences: ______ money we earn, _______ we live.

Choose one word or phrase marked A, B, C, or D that best complete the preceding sentence:

Nowadays, the divorce rate is higher than it used to be__________ young people are allowed to decide on their marriage.

Established about 1300, the Acoma Pucblo in New Mexico is believed to be oldest continuously occupied settlement in the United States

One inventor that Thomas Edison can take credit for is the light bulb.

Chọn một từ đúng trong ngoặc để hoàn thành các câu sau:

We feel very ___________ today.

Although the accurate of the United States census is debated, its figures are used to guide countless public funding decision

Science  and technology are part of the knowledges of educated people

Nuclear powers production in the us is controlled by the Nuclear Regulatory Commission [NRC]

My mother doesn’t care how much does the washing machine cost because she is going to buy it anyway

With an annual income of fifty thousand dollars a year, he can afford to give a luxurious life.

Most modern barns are both insulated, ventilated and equipped with electricity

Many of the (A) important products obtained from trees, one of the most important is wood pulp, which is used in paper-making

When there are low sales, companies often decide developing new products.

Choose the best word or phrase to complete the following sentences:

Scientists and engineers have invented devices to remove _________ from industrial wastes.

 Our prices are _______ with those in other shops.

Cho dạng đúng của động từ trong ngoặc để hoàn thành các câu sau:

Unless she (study) _____________ hard, she won’t pass the exam.