[单选题] As ________ announced in today’s papers,the Shanghai Export Commodities Fair is also open on Sundays.

1、[单选题]Careful surveys have indicated that as many as 50 percent of patients do not take drugs ________ directed.

• A、like
• B、so
• C、which
• D、as

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2、[单选题]Government cannot operate effectively ________ it is free from such interference.

• A、so long as
• B、so that
• C、unless
• D、because

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3、[单选题]Last summer I took a course on ______

• A、how to make dresses
• B、how dresses to make
• C、how to be made dresses
• D、how dresses to be made

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4、[单选题]They usually have less money at the end of the month than ________ money at the beginning.

• A、which is
• B、which was
• C、they have
• D、it is

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5、[单选题]It was not until he arrived at the station ________ he realized he had forgotten his ticket.

• A、that
• B、before
• C、when
• D、after

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