________the working efficiency，the boss allows the employees to have a coffee break.

Could you show me the TV set you’d like________？

Little Bob is often educated by his parents to be good and friendly to anyone even if ________.

________twice a year，whether it is a car or a bus or a truck，is the rule that every driver must obey in this city.

Yesterday a street­beggar bought a lottery ticket purposelessly，________him a millionaire overnight.

Now that we’ve discussed our problem，are people happy with the decisions ________？

He hurried to the station，only ________ that the train had left.

You should understand the traffic rule by now.You’ve had it ________ often enough.

The direct flight has proved successful，________ Taiwan another tourist destination for people on the mainland.

Film has a much shorter history，especially when________such art forms as music and painting.                                                      (2012·新课标全国，32)