They are all expert ____ this field.
A. in
B. over
C. to
D. into

Our mother ___ our stopping to have lunch.
A. told
B. asked
C. suggested
D. reminded

When facing problems, it’s important to keep a sense of ______.
A. comparison
B. relativity
C. proportion
D. introspection

Half of the children were away from school last week because of ______ of influenza
A a break -out
B a breakthrough
C an outbrust
D an outbreak

When you fire, keep calm and just squeeze the ........ gently.
A. barrel 
B. trigger 
C. sight
D. rifle

All members of the armed forces are required to ........ allegiance to the president.
A. announce 
B. certify 
C. swear
D. confess

The death rate would decrease if hygienic conditions ______ improved
A.are
B.have been
C .Were
D .had been

In 2006, the news agecy AP withdrew from sale 29 pictures taken by a photographer because 2 images taken in Lebanon ___ to have been digitally manipulated
A.believed 
B suggested
C announced
D.recommended

How did the framers put into ____ the idea of popular sovereignty expressed in the Declaration of Independence ?
A practice
B trial 
C test 
D,examination

Politicans ______ blame the media if they don't win the election .They are so predictable 
A variable 
B variety
C various
D.invariably