________ you began to do it, I think you’d better do it well．

A．Since

B．Because

C．For

D．As

－Tom was ill yesterday．

－It was ________ he asked a day off．

A．because

B．why

C．for

D．since

－How come you are late for the meeting again?

－________．

A．Because I missed the bus

B．By bus and then on foot

C．Please excuse it

D．It’s quite wrong

________ what you said, he got very angry．

A．Because

B．Because of

C．Since

D．For

She will tell us why she feels so strong that each of us has a role ________ in making the earth a better place to live．

A．to have played

B．to play

C．to be played

D．to be playing

I don’t know whether this is ________ part that she played in Hero, ________ very famous film in our country．

A．a; a

B．the; the

C．a; the

D．the; a

Money plays ________ important role in the material world．But expecting ________ money to give happiness may be missing the meaning of life．

A．a; the

B．an;/

C．a;/

D．the; the

The book ________ five maps, ________ three of Great Britain．

A．contains; containing

B．includes; including

C．contains; including

D．includes; containing

－How can a simple meal like this cost so much?

－We have ________ in your bill the cost of the teapot you broke just．

A．increased

B．included

C．obtained

D．charged

Green vegetables ________ nutrients, ________ vitamin A and C．

A．include; contain

B．include; containing

C．contain; include

D．contain; including