_______, women have changed history in terms of the contributions they have made.

________ cleaning the yard and making up the beds for the old, we also read newspapers for them and had chats with them.

All their attempts to rescue the child from the burning building were _____, and he died soon.

The teacher asked the students to do the experiment __________ small groups.

Besides being able to walk on for three days without drinking, camels can also live for a long time ______ small quantities of food. 

Although the price has gone up by 5%, it’s still ________ the limits set by the government.

How could she be so calm in front of so many people? It is really _______me.

A clean environment can help the city bid for the Olympics, which ______ will promote its economic development.

_______ more effective measures put in place, the disease has been brought _______ control.

Frank was offered a job in a bank, but________our surprise, he didn't take it.  (      )