I am sure it was by mistake that your closest friend took your English book .
A. Your closest friend must have taken your E book by mistake
B. I am sure your closest friend didn't take your E book deliberately
C. It is a mistake that your closest friend took your E book
D. It is certain your closest friend didn't take your E book on purpose

As the enemy forces were so (overwhelming), our troops had to retreat to a safer position.
A. powerful B. dreadful C. overflowing D. outgrowing
Closest

The most ENERGETIC athletes participated in the westling competition 
A. weak ___ B. cheerful 
C. enthusiastic ___ D. worried

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. It is the island's cultural DIVERSITY that makes it unique. 
A. beauty ___ B. abundance 
C. movement ___ D. similarity
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The DRAINAGE of wetlands may lead to natural habitat destruction. 
A. exploration ___ B. damage 
C. water filling ___ D. change

There are some HARD-TO-PICK-UP-AGAIN books in the bookshelf. So, don't mention them. 
A. good ___ B. scary 
C. useful ___ D. bad

 It is such a big CORPORATION that it has thousands of employees. 
A. company ___ B. factory 
C. programme ___ D. club

 The pirates prefer attacking luxury LINERS around some islands on the Atlantic Ocean. 
A. houses ___ B. sharks 
C. coasts ___ D. ships

 A new HYDROELECTRIC power station will be built near the village. 
A. using water power to produce electricity 
B. using hydrogen and carbon to produce electricity
C. using heat to produce electricity
D. using nuclear energy to produce electricity

She has decided that there will be no wedding though they have been ENGAGED for a long time. 
A. very busy with preparation 
B. affected by traditional values
C. formally agreeing to get married 
D. sharing the same interest