Encouraged greatly, the young man tried ________ with the purpose of setting up his own business．

A．as twice hard

B．twice as hard

C．twice as harder

D．harder twice

Ladies and gentlemen, please fasten your seat belts．The plane ________．

A．takes off

B．has taken off

C．is taking off

D．took off

________ life began on earth is one of the biggest puzzles that scientist found hard ________．

A．How; solving

B．When; to be solved

C．How; to solve

D．Which; to solve

The boy ________ on the ground ________ to me that he ________ the book on the table．

A．lied; lied; laid

B．who lay; lied; laid

C．lying; lay; laid

D．lying; laid; lay

Tom's little sister is a girl of great ________．She takes an interest in everything．

A．concern

B．purpose

C．curiosity

D．strength

－How about the concert held in the Grand Theater last night?

－Well, to be honest, ________．Maybe it would have been better to stay at home．

A．it was very exciting

B．it couldn't be better

C．I would rather attend it again

D．I was desperately disappointed

When ________ on the bed, ________ in her book, Judith didn't notice her parents come in．

A．lying; absorbing

B．laying; absorbing

C．lying; absorbed

D．lay; being absorbed

The couple decided to ________ another two children who lost their parents in the disaster．

A．receive

B．adopt

C．adapt

D．bring

Do come this Monday, Tom．The museum is worthy ________．

A．visiting

B．to visit

C．being visited

D．of being visited

The witness ________ on the Bible that he would tell the truth before the judge．

A．swore

B．doubted

C．betrayed

D．explained