19、–I’m glad to be offered the job．Shall I start tomorrow?

– ______．See you tomorrow.

A．That’s hard to say                                       B．That depends

C．That’s all right                                            D．That would be great

18、He is free now, so he ______ go with us, but he hasn’t decided yet.

A．shall         B．must         C．may           D．will

17、During the expedition in the mountains we passed through a place where in a little while we all lost our ______ of direction.

A．sense        B．feeling         C．idea          D．ability

16、Social networking is an important factor _______ business success.

A．devoting to           B．appealing to           C．attaching to         D．leading to

15、Let him who tied the bell onto the tiger take it off -- _____ started the trouble should end it.

A．whomever           B．who         C．whoever           D．anyone

14、He thought that painting copied by a modern artist was ______ great value and bought it ____ over a thousand dollars.

A．at; for             B．of; for          C．of; at           D．for; by

13、– Are you cleaning my room?

– I can’t help _____．I can’t bear seeing people’s room in a mess!

A．it            B．this          C．anything          D．so

12、The factory, including its machines and buildings, ______ burnt to ashes during the fire.

A．is           B．are          C．was          D．were

11、________ that I was puzzled.

A．So difficult a question did he ask me

B．Such difficult a question did he ask me

C．Such a difficult question he asked me

D．He asked me a so difficult question

10、The twin brothers stand under the tree, ______ and say nothing.

A．puzzled        B．puzzling         C．being puzzling        D．being puzzled