________ his homework made his father very angry．

A．The boy's not having finished

B．The boy’s having not finished

C．The boy not having finished

D．The boy having not finished

It difficult to keep ________ of all new discoveries in genetics．

A．track

B．note

C．mind

D．record

The doctor strongly advised Vera that she should take a holiday,but ________ didn’t help．

A．he

B．she

C．which

D．it

－Can I help you？

－I'd like to buy a present for my father's birthday, ________ at a proper price, but of great use．

A．one

B．that

C．any one

D．everything

The tiger, which we ________ dangerous and bad, is very important to the food chain．

A．consider

B．think it

C．regard

D．think as

It is unbelievable that a well-behaved gentleman ________ be so rude to a lady．

A．will

B．may

C．must

D．should

You’d better put the papers and magazines into ________ bag．

A．cloth

B．clothing

C．the clothes

D．a cloth

The police got to ________ was once an old school and now is a shopping center．

A．what

B．where

C．that

D．which

The storm died away at last with the golden waves ________ the shore in peace．

A．striking

B．hitting

C．beating

D．knocking

The moment she heard manager’s angry voice on the phone, she ________ what she would have to face．

A．had sensed

B．has sensed

C．sensed

D．would sense