While having our dinner, _____ .

[　　]

A. the doorbell rang

B. we heard the doorbell rang

C. we heard the doorbell ringing

D. the doorbell was heard to ring

--Can I help you?

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

[　　]

--Do you have a big library?

--No, we don't-- ________, not as big as yours.

[　　]

Man's shopping can be and often is completed in five minutes, which is less than a quarter ________.

[　　]

A．that of a woman's

B．of a woman

C．of that of a woman

D．of a woman's

________ do you ________ about the government's latest offer to the teacher?

[　　]

A．What; think of

B．What; feel

C．How; think of

D．What; find

Mr Smith was much surprised to find the watch he had ________ was nowhere to be seen.

[　　]

Take care ________ you cross these busy streets.

[　　]

There are eight tips in Dr Smith's Lecture on sleep, and one of them is： ________ to bed early unless you think it is necessary.

［　　］

A．doesn't

B．not to go

C．not going

D．don't go

The number of people present at the concert was _________ than expected. There were many tickets left.

［　　］

A．much smaller

B．much more

C．much larger

D．many more

Fred is second to none in maths in our class, but believe it or not, he _________ passed the last exam.

［　　］

A．easily

B．hardly

C．actually

D．successfully