She _____her homework before eight o’clock last night.
A.finished     
B. has finished   
C. had finished  
D.was finished

Most species of heliotropes are weeds, ______ of them are cultivated.  
A.some      
B.but some      
C.for some species    
D.some spices

They’re  staying  with  us______ the time  being  until  they  can afford  a  house.
A.during      
B.at    
C.for
D.in

Pearl Sydenstricker Buck, ______ the Nobel Prize for Literature in 1938, is best-known for her novels about China.
A.who won      
B.winner of        
C.to win             
D.who the winner of

Nam’s been studying really hard, ______ he can pass the exams.
A.but          
B.therefore     
C.however            
D.so

Keep quiet! You ______ talk so loudly in here. Everybody is working.
A.mustn’t       
B.must       
C.needn’t  
D.need

If you want to lose weight, you’ll have to _____ less.  
A.get used to eat  
B.be used to eat 
C. get used to eating   
D.used to eat

______ is present in the body in greater amounts than any other mineral.
A.There is calcium 
B.Calcium
C. Calcium, which       
D.It is calcium

The phrase “came to the forefront” in line 15 is closest in meaning to ………….. 
A.grew in complexity 
B.changed its approach 
C.went through a process
D.became important

The streamlined moderne style is characterized by all of the following EXCEPT ……….. 
A.animal motifs 
B.flat roofs
C. round windows
D.“speed stripes”