He left the company all of a sudden ________ his work unfinished．

A．with

B．for

C．of

D．as

None of us likes that fellow, since he is always ________ creating difficulties to set back our tasks．

A．attentively

B．particularly

C．especially

D．purposely

Some day you will look back on all of this and say," Hard ________ it was, it made me who I am today．"

A．although

B．as

C．if

D．while

A study shows that students living in non-smoking dorms are less likely to ________ the habit of smoking．

A．turn up

B．show up

C．pick up

D．make up

Don't do such a thing any more, or else you ________ be punished．

A．would

B．shall

C．should

D．must

We should teach children how to react in a situation ________they need to make an immediate decision on their own．

A．that

B．which

C．where

D．what

The organizer said that the heavy rain during the night prevented the work from ________in time．

A．completed

B．to be completed

C．being completed

D．completing

Susan ________ California for Colorado in 2008 and ________ there ever since．

A．left; worked

B．has left; had worked

C．left; has worked

D．has left; worked

The policeman arrested the suspect in a nearby city after ________ was about ten days．

A．that

B．it

C．what

D．which

When you've finished with that book, don't forget to put it back on the shelf, ________?

A．will you

B．must you

C．don't you

D．do you