Which tests are direct tests? ( )
A、If we want to know how well candidates can write compositions, we get them to write compositions.
B、If we want to know how well they pronounce a language, we get them to speak.
C、Some tests to measure writing ability may contain items requiring candidates to identify which of the underlined elements is wrong or inappropriate in formal standard language.
D、Testing pronunciation ability by a paper and pencil test and candidates are required to identify pairs of words rhyming with each other.