The work calls for great care and patience．So you ________ to do it．

A．can be too careful

B．can't be too careful

C．can be too careless

D．can't be careful

He has been ________ busy ________ find time to answer the readers' letters．

A．so; to

B．so; that

C．too; to

D．too; that

All of the villagers came out to receive me as an ________ guest．

A．honour

B．honouring

C．honoured

D．honours

It is ________ honour to hear you speak so highly of me．

A．不填

B．an

C．the

D．a

－What is the most useful modern invention?

－Can you imagine ________ without electricity?

A．to live

B．live

C．living

D．yourself to live

We can hardly imagine him ________ the hard work alone．

A．to finish

B．finishes

C．is finishing

D．finishing

We shouldn't put sweets on a high shelf ________, but we must keep poisons ________．

A．out of the children's reach; out of the reach of children

B．out of the reach of children; within the children's reach

C．within the reach of children; out of the children's reach

D．within the reach of children; with children's reach

He ________ the ladder while ________ on the tree．

A．falled down from; reaching for the apple

B．fell down; he reached for the apple

C．fell off; he reached for the apple

D．fell off; reaching the apple

What a nice ________!They treated the caught soldiers with ________ violence．

A．surprise, shocking

B．shock, shocking

C．astonish, surprising

D．astonishment, astonishing

He was shocked ________ his son playing all day．

A．knowing

B．to know

C．at know

D．known