As _______ unemployment is very high at the moment, it's very difficult for people to find _______ work.

A．the, 不填               B．不填，不填

C．the, a                 D．an, the

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

As is known to us all, _____ tiger is in _____ danger of becoming extinct.

A．the, a                B．the, 不填

C．a, 不填               D．不填, the

This is _____ best kind of _____ pen you can get here.

A．the, the              B．the, a

C．the, 不填             D．a, the

How strange! These years my birthday always falls _____.

A．on the Sunday           B．on a Sunday

C．on Sunday               D．at a Sunday

As _____ writer, he was _____ complete failure.

A．a, a                   B．a, the

C．不填，不填            D．a, 不填

The operation is _____ success and the patient is now out of _____ danger.

A．a, the               B．a, 不填

C．不填, the            D．不填，不填

_______ India and China are of _______ same continent.

A．/; the                B．The ; the

C．/; /                  D．/; a

A spaceship flies at about eleven kilometers _______ second.

A．/                    B．the

C．a                   D．an

—Did you have any difficulty in today’s homework?

—No, in fact I found ________.

A．it very easy to do            B．it very easy done

C．it’s very easy to do         D．very easy to do it