Students were asked to select the correctly-written sentence. On each of the ten test/worksheets, the problem-type order was sequentially identical. For example, the first sentence-set always concerned the use of “have/has” in lieu of “there is/there are”; the second sentence-set always concerned the use of Thai word-order for nouns and adjectives; the last (tenth) sentence-set always concerned the avoidance of “will”; etc., and in accordance with the sequence shown in Table 1.