Harrison Ford is thought to be one of the few movie stars ____ as a carpenter before.

 China has been pushing the reform of public hospitals ______ all its citizens.

Building a new school is one thing, while keeping it running smoothly is quite_______.

New technologies have made ______ possible to turn out new products faster and at a lower cost.

It suddenly occurred to him _____ he had left his keys in the office.

She showed the visitors around the museum, the construction _____ had taken more than three years.

 --- I am shocked at the news that many pupils were killed in the terrible traffic accident.

--- So am I. Little ____ the safety of the poor children.

It was not until I came here ____ I realized this place was famous for not only its beauty but also its weather.

____ the consequences of the chemical leaks, the specialists haven’t given final conclusion before they obtain accurate statistics.

When I was growing up, I always gave my mom an apron （围裙）on her birthday．I wanted my own mom —   21  that apron I'd just given her, of course —to   22  me at the end of each afternoon bearing a plate of home-baked   23  as she waited breathlessly to hear about my   24  day at school．

Mom loved her family without question, but as an elementary-school teacher she had her own exciting days to   25   .She had hardly any extra time and   26 , and home-baked treats were rare in our house except   27  very special occasions．Since Mom didn't make cookies very often, the   28  of her baking were not always the same．Sometimes the cookies were browned a little more than planned or   29  together and other times the cookies weren't smooth．  30 , none of that bothered anyone in the family．All we   31  was swallowing whatever we were having for dinner that night so we could get to the cookies   32  us on the kitchen counter．

Now that I'm a mom myself, I can   33  all too well why my mother didn't always have the time to wear the apron．As was true with my mother, the list of things I need to do is often   34 than the day itself．But I also understand the desire to   35  the same yellow mixing bowl my mother used and make something special for my family every so often．Whatever I bake is met with approval, appreciation and good   36  by my husband and children．At some level, I believe they're   37  that I was thinking about them as I   38  the brown sugar into the butter or frosted the cake with their favorite kind of icing．They always know I love them．I  39  they know it a little better when I'm in a baking mood．

I'm sure my mother felt   40  the same way whenever she made cookies for us．Those cookies will always, in my mind, be the best treat．