问题
选择题
Tom’s decided to devote all he could ________ his English before going abroad.
A．to improving
B．have improved
C．to improve
D．improve
答案
答案：A
题目分析：句意：汤姆决定在出国前专注于他所有的时间来提高他的英语。Devote vt.把……奉献（给），把……专用（于）; 奉献; devote sth to (doing) sth 把时间(钱，精力等)献给某事物。所以选A。