合同生效后，设计人要求终止和解除合同，设计人应( )。
A．返还定金 B．双倍返还定金C．返还定金和违约金 D．返还定金并交纳罚款
参考答案：B
When we heard the good news , all of us were very ____. [ ]
A. exciting
B. excited
C. interesting
D. interest
I would be very much（）if you could arrange for a radio technician to come on board as soon as possible for my radar repair.
A.obliged
B.obliging
C.oblige
D.being obliged
