Identify the one underlined word A, B, C or D that must be changed for the sentence to be correct: 

At present, solar cells are too expensive and inefficient to use in the commercial generation of electricity

Câu hỏi liên quan

• No decision will be made about my future appointment until all suitable candidates had been interviewed.

• Choose the best answer:

  I can't get my car ........... in cold mornings.

• The pleura that cover the exterior of the lungs and the inner walls of the chest cavity is a thin elastic membrane.

ZUNIA12

• I have gone to Copenhagen three times this year, I still want to spend my holiday there.

• Identify the error in each sentence: 

  Only after food has been dried or canned it should be stored for future use.

• Identify the error in each sentence: 

  There are also many single mothers and single fathers which are raising children by themselves.

• Deep cratered, the moon is over 2100 miles in diameter with negligible gravity and atmosphere.

• Chọn đáp án đúng để hoàn thành các câu sau:

  What should I tell the mechanic?" ~ "The oil needs_______"

• If the water level has raised a little higher, the dam would probably have broken.

• Jaguarundis are bird, long-tailed creatures colored either an uniform reddish brown or dark grey.

• Choose the best answer:

  There are different kinds of music to ..........................your taste.

• The amount of books in the Library of Congress is more than 58 million volumes.

• Identify the error in each sentence: 

  The result of that test must be inform before August.

• My brother attends an university in the Midwest which specializes in science.

• He has got several hundred bottles of wine which he keeps in the cellar below his house.

• My parents........they will move to the seaside when my father retires next year

• Books are a wonderful source ________ knowledge and pleasure.

• His emotional problems _______ from the attitudes he encountered as a child, I think.

• Identify the one underlined word or phrase that must be changed in order for the sentence to be correct.

  At the awards banquet, the philanthropist was recognized for his generosity and careful in aiding the poor.

   

• The word “scuba: is actually an acronym that comes of the words “self-contained underwater breathing apparatus”.