题干
— The problem is ________ difficult. I can't work it out.
— Try again, please.
A：a bit
B：a lot
C：too very
D：too much
答案(点此获取答案解析）
A
— The problem is ________ difficult. I can't work it out.
— Try again, please.
A：a bit
B：a lot
C：too very
D：too much
