It is said that the early European playing-cards ________ for entertainment and education．

A．were being designed

B．have designed

C．have been designed

D．were designed

My frien, who ________ on the International Olympic Committee all his life, is retiring next month．

A．served

B．is serving

C．had served

D．has served

We took our umbrellas with us when we went out in order to ________ us from a heavy rain．

A．ban

B．preserve

C．prevent

D．protect

________ in 1636, Harvard is one of the most famous universities in the United States．

A．Being founded

B．It was founded

C．Founded

D．Founding

The school ________ three hundred pupils; now there are double that number．

A．started of

B．started with

C．started to

D．started

The weather will ________ fine, I think．

A．go on

B．keep on

C．carry on

D．continue

Father and mother, though sometimes holding different ________, had but one ________, one aim－the family．

A．opinions; thought

B．views; idea

C．thoughts; appearance

D．ideas; opinion

You’d better wear sunglasses in summer to ________ your eyes ________ the strong sunlight．

A．protect; against

B．keep; from

C．stop; from

D．cover; off

When I passed the entrance examination, my family ________ me ________ my success．

A．celebrated; on

B．congratulated; on

C．celebrated; to

D．congratulated; to

Since then the number of people taking driving lessons ________ 20％．

A．has increased to

B．increases by

C．has increased by

D．have increased by