题干
Don't put off today's work for tomorrow. I mean, today's work ______ today.
A：may do
B：must do
C：can do
D：must be done
答案(点此获取答案解析）
D
Don't put off today's work for tomorrow. I mean, today's work ______ today.
A：may do
B：must do
C：can do
D：must be done
