He had so a difficult exercise that he couldn’t do it .

Câu hỏi liên quan

• Choose the best option:

  During a long drought, farmers had to find ways to ____ their crops.

• Bacteria lived in the soil play a vital role in recycling the Carbon and Nitrogen needed by plants.

• In human beings, as in other mammal, hairs around the eyes, in ears and in the nose prevent dust, insects, and other matters from entering these organs.

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• One of the most difficult questions in defining sleep is “What are the functions of sleep?”

• When T.S. Eliot’s “The Wasteland” appeared in 1922, critics were divided as to how good it was written

• He looked like he had been in some strange land where age advanced at a double pace.

• Choose the correct answer to complete the sentence. "_____ clear evidence, your company couldn't deny having dump a large quantity of toxins into the sea"

• Deciduous trees are ones that lose its leaves in the autumn and grow new ones in the spring.

• People with exceptionally high intelligence quotients may not be the best employees since they become bored of their work unless the job is constantly changing

• The brothers Grimm intended their fairy tales to be studied by scholars of German literature and not to enjoy as simple stories by children

• I think she would forgive you if you ____ to speak to her. 

• Her application for a visa was turned down not only because it was incomplete and incorrectly filled out but also because it was written in pencil

•  “I’m too tired to study.” “If you hadn’t watched that late movie last night, you _____ so tired now.” 

• The early periods of aviation in the United States was marked by exhibition flights made by individual fliers or by teams of performers at country fairs

• Choose the best option:

  Deforestation is destroying large areas of tropical rain forest.

• An octopus has three hearts to pump blood throughout their body.

• .......... chair which you are sitting in is broken. 

• The Aardvark is a mammal that burrows into the ground to catches ants and termites

• An electromagnet will remain magnetized only as longer as electricity flows through it

• Although ferns lack flowers, they do have leaves, stems, and root.