____ enough preparation, they thought it better to put off the experiment till next week．

[　　]

A．Not making

B．Not having made

C．Having not made

D．No being made

In Hangzhou Mr Green was so struck by ____ beauty of ____ nature that he stayed for another night．

[　　]

A．/…/　　　　B．/…the

C．the…/　　　D．the…the

Electricity ____ by the Greeks a good many years ago．

[　　]

A．was first found

B．was first discovered

C．was seen first

D．has first been discovered

It is required that the money ____ paid immediately．

[　　]

A．will be　　　　B．must be

C．be　　　　　　 D．is

Only by practising a few hours every day ____ be able to master the language．

[　　]

A．you can　　　B．can you

C．you will　　 D．will you

Teachers of English are needed ____ than those of the other subjects．

[　　]

A．worse　　　　　B．better

C．more badly　　 D．many more

The last wish of the dying old man is ____ his son in Tibet．

[　　]

A．to see　　　B．seeing

C．seen　　　　D．for seeing

There are flowers and trees on ____ side of this road．

[　　]

A．every　　　B．both

C．each　　　 D．all

All that ____ ____ not gold．

  [ ]

A．glitter…are　　　 B．glitter…is

C．glitters…are　　　D．glitters…is

It was reported that two-fifths of the people at the meeting ____ famous scientists．

[　　]

A．were　　 　B．was

C．are　　　　D．had been