The purpose of this study is to find out (i) whether the use of computer-assisted language learning (CALL) facilitates the students to have better achievement in English language learning at the English Department of UNM, and (ii) their preferences in terms of teaching delivery modes. The subjects of the study were the second semester students selected purposively. Two kinds of instruments were used, namely questionnaires and tests. The data were analyzed by using frequency and percentage distribution, mean analysis, t-test, and ANOVA. The findings of the study indicated that the use of computer to aid the EFL teaching contributed to the students' English achievement. In terms of teaching deliveries, most students preferred CALL-Classroom mode, which means that the students could much more benefit from the use of CALL programs in English learning.