题干
—How do I improve my math grades?
—_______, you should listen to the teacher carefully.
A：First of all
B：At the first
C：Begin
D：At last
答案(点此获取答案解析）
A
—How do I improve my math grades?
—_______, you should listen to the teacher carefully.
A：First of all
B：At the first
C：Begin
D：At last
