Although Mrs. Smith has spared a lot of time for exercising, her health ______ poor.

123. At present nanotechnology(纳米技术), a kind of tip science_________to the common people. Few people know him.

Many trees _______ on the hills last year.And we will plant more this year.

May I use your dictionary for a while — ______ . It’s on the desk.

Some companies have introduced flexible working time with less emphasis on pressure ____