It takes me half an hour_____the piano every day.

A．play

B．playing

C．to play

As _____ writer, he was _____ complete failure.

A．a, a B．a, the

C．不填，不填 D．a, 不填

He spent too much time talking on ______ phone while we were all busy at _____ work.

A．the, 不填 B．a, 不填

C．不填, 不填 D．the, the

-John has put forward _______ most challenging question for us to answer.

-Yes, it really is. I have never heard _______ harder one.

A．the; 不填 B．不填; the

C．the; the D．a; a

________ England of those years was _______ England in peace.

A．不填, 不填 B．The, an

C．The, 不填 D．不填, an

—Be careful ! There is _____dog lying on the ground.

—Thanks a lot.

A．a B．an C．the D．/

_______girl riding a bike is ________university student.

A．A, an B．The, an

C．A, the D．The, a

It was ______ cold winter night and the moon was shining brightly across ____ night sky.

A．不填；a B．a; the

C．the; a D．the; 不填

It’s ___ good feeling for people to admire the Shanghai World Expo that gives them ______pleasure.

A．不填, a B．a, 不填

C．the, a D．a, the

The paper is due next month, and I am working seven days ______ week, often long into______night.

A．a; the B．the; 不填

C．a; a D．不填；the