The new regulation does not______until the first of March.
A. take into account
B. go into effect
C. carry into practice
D. put into operation
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Mary is a conscientious student; she works very hard and is______to her teachers.
A. respected
B. respectable
C. respectful
D. respecting
Don't put too much pressure on the children, because anxiety can ______ with their performance at school.
A. interfere
B. interpret
C. interrupt
D. interview
The children will not be allowed to come with us if they don't______themselves better.
A. direct
B. declare
C. act
D. behave
The new______machine is a great help in the production of this factory.
A. adequate
B. sufficient
C. efficient
D. effective