Duty is an act or a course of action that people（）you to take by social customs, law or religion

单项选择题The idea came to me when I ______ with him.

单项选择题I'm not quite sure how to get there. I'd better______a map.

单项选择题Let's learn to use the problem we are facing ______ a stepping-stone to future success.

单项选择题In some remote places there are still very poor people who can't afford to live in ______ conditions.

单项选择题The young lady（）nothing but fashions on which she spends a lot.

A.cares for
B.applies for
C.sends for
D.runs for

单项选择题The farmers stored up a good（）of wheat and a（）of beans this year.

A.number；lot
B.deal；number
C.plenty；lots
D.deal；lots

单项选择题—Good morning. I' ve got an appointment with Miss Smith in the Personnel Department. —Ah, good morning. You（）be Mrs. Peters.

A.might
B.must
C.would
D.can

单项选择题( )是英语学习成功的关键。

单项选择题根据《水浒传》的描述，在头脑中再造出武松打虎的情景的过程，就属于( )。

单项选择题直接法强调______的重要性。