Please remember to a stamp your envelope before you post it to your friend.
A. attach; to
B. fasten; to
C. tie; to
D. stick; by
网友回答
(答案→)A. attach; to
B. fasten; to
C. tie; to
D. stick; by
解析：考查动词短语：A. attach; to把…贴在…上，B. fasten; to把…拴在…上，C. tie; to把…系在…上，D. stick也有“粘帖”的意思，但是和to/on连接，句意：在寄信前记住在信封上贴上邮票。选A。