问题

Before going abroad,he devoted all the time he could ________ his spoken English.
A:to improve
B:to improving
C:improve
D:Improving;
B:to improving
C:improve
D:Improving;
正确答案是:
同类题型
Your money could _______ better use insteadof _____ idle in the bank.
Everyone was trying to ________ a better idea to persuade him to stay.
Will there be many robots in people’s homes— _______. Robots will help people a lot.
Last Sunday, I went shopping for the perfect dress, ______ would make me look younger.