Women have big advantages _____ men in space because they need less food and oxygen and they stand up to radiation better.[ ]

We did not expect our offer_________ so quickly.[ ]

Tell Mary there is someone __________ for her at the door.

riding along the street and all of asudden, a car cut in and knocked me down.—- You can never be _______ careful in the street.

Iwill go to Qingdao for a visit with my family during the long holiday of May. — .