When he awoke, he found himself _____ after by an old woman.

The price of fish is （ ） during the Spring Festival.

（ ） we have all the materials ready, we should begin the new task at once.

Only when （ ） in the afternoon （ ） able to leave.

I stayed up all night _____ to find a new solution to the problem.

Mass production has made （ ） the goods and services we want at a lower price.

—Do you like the material? —Yes, it （ ） very soft.

I love thinking of new designs. It keeps my mind clear and active and fills my retired life with （ ）.

The girls （ ） a pizza and two drinks and took them to a dining table.

He made another wonderful discovery, （ ） of great importance to science.

It is （ ） impossible to work with this noise around.

The twin sisters look so much alike that I could never tell _____.