The chips, which have become (__) (increase) complex since the beginning.
举一反三
- Since the beginning of this century, ______ has become even more important for the expansion of English vocabulary.
- They have become fashionable again since around 5) ________.
- They usually have less money at the end nf the month than（）at the beginning. A: which B: which was C: they have D: it is
- Prices have climbed by 21% _________________ the beginning of the year. A: at B: since C: in D: for
- Marriages based on love, rather than the arranged version, have become (increase) _____ popular in this country.