21. We do meet now and then to talk about our career, but not _____.
A. usually B. commonly C. presently D. regularly
22. _____ achievement last week’s ministerial meeting of the WTO here earned a low, though not failing grade.
A. In terms of B. In case of C. As a result of D. In face of
23. You can use a large plastic bottle, _____ cut off, as a pot to grow young plants in.
A. the top is B. the top of which C. whose top D. with its top
