________twice a year，whether it is a car or a bus or a truck，is the rule that every driver must obey in this city.

A．Examining

B．Examined

C．Being examined

D．Having been examined

Little Bob is often educated by his parents to be good and friendly to anyone even if ________.

A．attacking? B．is attacked

C．to be attacked? D．attacked

Could you show me the TV set you’d like________？

A．to have repaired? B．repairing it

C．to have it repaired? D．to repair it

________the working efficiency，the boss allows the employees to have a coffee break.

A．Improving? B．To improve

C．Having improved D．Improved

The little boy still needs the________20 dollars to do with some things________.

A．remaining；remained to be settled

B．remaining；remaining to be settled

C．remained；remained to settle

D．remained；remaining to settle

—I would like to buy an expensive camera.

—Well.We have several models________.

A．to choose from? B．of choice

C．to be chosen? D．for choosing

________tomorrow’s lessons，I have no time to play with you.

A．Not preparing? B．Not prepared

C．Not having prepared? D．Having not prepared

The country has already sent up three unmanned spacecraft，the most recent ________ at the end of last March.

A．has been launched? B．having been launched

C．being launched? D．to be launched

Generally speaking，prices of daily goods ________ through the Internet are lower than store prices.

A．to buy? B．are bought

C．buying? D．bought

I’ve worked with children before，so I knew what ________ in my new job.

A．expected? B．to expect

C．to be expected? D．expects