Many household articles ________ during summer sales at big London stores.

[　　]

It is not necessary that your names should ________ your desks.

[　　]

In certain parts ________ signs at the roadsides, cameras are forbidden.

[　　]

A．are marked with

B．are marked by

C．marked with

D．marked by

We'd like goods ________ China.

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To save money, we'll use only ________ building materials.

[　　]

It would have taken to work the problem out. So I ________ my calculator.

[　　]

He said he could __________ and refused any help.

[    ]

A. manage　　B. be able to　　C. try　　D. help

Will you ________ me a favor, please?

[　　]

All the children thought the animal could ________.

[　　]

A．keep alive

B．keep living

C．be kept alive

D．be kept living

Put the flowers in warm rooms to ________ them ________ the freezing cold.

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