Had you devoted ________ energy to your lessons, you would have been ________ disappointed．

A．more; less

B．fewer; more

C．least; most

D．most; least

To pay for their ________, people now are using smart cards, containing a tiny chip instead of cash．

A．purchases

B．rent

C．bills

D．menu

Most leading websites carry ________ news that the price of ________ petrol is on the decline due to the low times of global economy．

A．不填；不填

B．不填；the

C．the; the

D．the; 不填

Mr．Smith owns ________ collection of coins than anyone else I have ever met．

A．larger

B．a larger

C．the larger

D．a large

________ modeling business is by no means easy to get into, the good model will always be in demand．

A．While

B．Since

C．As

D．If

Progress so far has been very good．________, we are sure that the project will be completed on time．

A．However

B．Otherwise

C．Therefore

D．Besides

Mary wanted to travel around the world all by herself, but her parents did not ________ her to do so．

A．forbid

B．allow

C．follow

D．ask

He is the only one of the students who ________ a winner of scholarship for three years．

A．is

B．are

C．have been

D．has been

Dorothy was always speaking highly of her role in the play, ________, of course, made the others unhappy．

A．who

B．which

C．this

D．what

While building a tunnel through the mountains, ________．

A．an underground lake was discovered

B．there was an underground lake discovered

C．a lake was discovered underground

D．the workers discovered an underground lake．