________ villagers on that island have been living in ________ peace for years with one another.

A．The; /       B．/; the C．The; a      D．The; the

－All of us had a good time in the picnic last Sunday. Pity you weren’t there.

－I really _______ come but I was looking after my mother in hospital.

A．must        B．ought to    C．need have        D．should have

In the botanic garden we can find a(an) ___ of plants that range from tall trees to small flowers.

A．species     B．group       C．amount     D．variety

－Take this medicine three times a day, Tom.

－Do I have to take it? It __________ so terrible.

A．is tasting          B．is tasted    C．tastes       D．has tasted

The professor could hardly find enough reasons ____ his arguments in favor of the new theory.

A．to be based on                                            B．to base on           

C．which to base on                                        D．on which to base

She __ to bed when the earthquake suddenly started. That was why she was just in her bed clothes.

A．was about to go       B．went         C．did go       D．would go

Mr. Jone must have seen the film last night, _________?

A．didn’t he   B．mustn’t he       C．didn’t John      D．hasn’t he

He hurried to the booking office only _________ that all the tickets had been sold out.

A．to tell     B．to be told        C．telling    D．told

I have worked with Tom for some time and have found that he is _____ than John.

A．more efficiently a worker                            B．a more efficient worker

C．more an efficient worker                             D．a worker more efficiently

The university __________ Mr. Smith teaches is a world-famous one, _____ was founded over one hundred years ago.

A．where; that      B．in which; where       C．that; which      D．where; which