It is an excellent book, it is worth _________ a second time．

to read

to be read

reading

being read

_________ made her succeed finally was her hardwork and strong will．

It

This

What

As

He is a man of great knowledge, _________ much can be learned．

in whom

about whom

from whom

of whom

Once it is formed, a bad habit is not easy to _________．

get rid of

pick up

cut off

care for

Americans eat _________ vegetables per person today as they did in 1910．

more than twice

as twice as many

twice as many as

more twice than

During your English study, you will _________ many difficulties．

come on

come up

come across

come about

A poet and artist _________ coming to speak to us about Chinese literature and painting tomorrow afternoon．

is

are

was

were

Either you or one of your students _________ to attend the meeting that is due tomorrow．

are

is

have

be

Dr．Smith, together with his wife and daughters, _________ visit Beijing this summer．

are going to

is going to

was going to

were going to

I failed again in the exam and only then _________ how much time I had wasted．

I realized

I had realized

did I realize

had I realized