Thank you for sending us ____ fresh vegetables of many kinds. You have done us ____ a great service.
-- You know I dropped medicine and __________ physics. --- You made a right decision.
--Hey, Mary, you are wanted on the phone. ---________I’m coming.
She is also 25 and a native of Beijing, but the ______ between us ends there.
--- Do you enjoy seeing foreign films? --- Yes. Some of them are good and the film Avatar, ______is excellent.
It is amazing that the little boy can swim ________the river ________100 meters wide.