1.I used my money _____(buy)the dictionary.
2.Sorry,I kept you _____(wait)so long.
请讲解一下，谢谢！
1，to buy
use sth. to do sth.用某物做某事
2，waiting
keep sb. doing sth.保持/让某人做某事
use sth. to do sth.用某物做某事
2，waiting
keep sb. doing sth.保持/让某人做某事
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第1个回答 2008-04-20
1. to buy (use to do)
2. waiting (keep doing ) (kept doing)
2. waiting (keep doing ) (kept doing)
