He broke his arm, but the ____ healed quickly.
A. fracture
B. fraction
C. feature
D. feather
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Because of the development of lightweight and____ cameras, television reporters can televise news wherever and whenever it is happening.
A. visual
B. mobile
C. synthetic
D. abnormal
_____ is one of the principal gases contributing to the greenhouse effect.
A. Formaldehyde
B. Methane
C. Benzene
D. Nitrogen
Her family began to ____ the countryside for a suitable house.
A. seek
B. scour
C. screw out
D. look for
--- I had terrible toothache all last night. --- You’ll have to have that tooth ____.
A. get rid of
B. extracted
C. fixed
D. repaired