Each worker puts in nearly 2.200 hours a year,

(   ) average, and  contributes about $30 to GDP per hour.

If   you have difficulty(   - your bills, tell your utility company as soon  as possible.

(     )most students own a smartphone the school does not allow them  to use it in the classroom.

The airport is usually your first stop before (   )

 on your vacation or  trip.

It was at yesterdays' meeting( )I misunderstood what you had  said.

Tourists can get the latest information of our city() the help of our  local  tour  guides

she has been working in China for only two years, she speaks  fuent Chinese.

We have read this instruction many times and we are()with all the steps  we should take.

Employees would like to work under team leaders who  ()good  examples.