按要求画出力的示意图。
The young man came _______ to the airport hurriedly only_______his girl friend had already gone.
A.driving; to find
B.to drive; to find
C.and drove; found
D.driving; finding
保险合同是一种()的保障性合同。
A.无偿
B.单务
C.诺成
D.有偿、双务