After teaching sounds, a teacher makes a test that aims to find out which sounds students are and are not able to pronounce. This test belongs to__________.
A. aptitude test
B. proficiency test
C. achievement test
D. diagnostic test
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--Patience is a good quality.--Yes, that is _____ it takes to do anything well.
A. what
B. which
C. that
D. how
The place is_________attractive both in spring and autumn for its pleasant climate.
A. partly
B. hopefully
C. merely
D. equally
Children may get into some bad habits__________they lack sell-discipline.
A. when
B. unless
C. though
D. until
How many liaisons of sound are there in the sentence 'Tell us all about it'?
A. one
B. two
C. three
D. four