Firewalls may best be compared to ______. A．customs officers B．firemen C．doctors D．repairmen

In the past, the workers were often forced (work)______twelve or fourteen hours a day.

A、will put on a day.

B、put on a day.

C、are putting on a day.

D、had better put on a day.

A．ten

B． nine

C． eleven

D． twelve

Polly is very busy. She ()work at about 7.00 every day.

A. finish

B. does finishes

C. finishes

A、Dewey's sense of direction is amazing.

B、Dewey was very happy.

C、Dewey was excited.

D、Dewey was very tired.

Which of the following is NOT TRUE？

A．The traffic police in London can be very busy.

B．The traffic in some parts of London is very heavy.

C．On average Mark Hill is on duty four hours a day.

D．Cyclists are not allowed to use the motorways.

A．one

B．some

C．each

D．a

A．A.happened

B．B.occurred