I promise to (use/using) fewer pastic cups 选择
问题描述：
I promise to (use/using) fewer pastic cups 选择
答
use 名词 n.1.承诺,诺言[C][(+of)][+(that)][+to-v]Give me your promise that you'll never be late again.答应我你绝不再迟到了.2.希望,前途[U][S]The young man shows promise as a poet.这位青年有成为诗人的希...