resource ()
A. coming to or reaching a certain place.
B. the act of putting into position or the state of being put into position; location.
C. a source of help or support.
D. to use a __________ on something.
previous ()
A. an English game played outdoors with a ball and bat by two teams of eleven members each.
B. first in time or order.
C. happening or existing before the event or object that you are talking about
D. (plural, but used with a singular verb) an English game somewhat like baseball.
previously ()
A. (plural, but used with a singular verb) an English game somewhat like baseball.
B. a game in which two teams use their hands to hit a ball over a high net. A team gets a point when the ball hits the ground in the other team's court.
C. just before another.
D. that which rounds, such as a tool that rounds off corners.
differ ()
A. to identify (someone or something) from previous experience or contact with that person or thing.
B. in a way not known or understood.
C. a group of followers or supporters.
D. to be not the same as; be unlike.
request ( )
A. a person who serves another person.
B. able to operate without the help or work of a human.
C. a fixed basin connected to a water supply and a drain
D. to ask for politely.
微信支付 
支付宝支付