我国法定担保形式有：保证（单独保证与共同保证，一般保证和连带保证，普通保证和最高额保证）抵押、质押、（）、（）。
参考答案：留置；定金
The teacher had a _____ look when he found that none of his students had finished his homework. [ ]
A. shocking
B. shocked
C. bored
D. boring
如果一国出口量大于进口量叫做（），出口量小于进口量叫做（）。；
