---- I’m feeling so tired now.---- _________ stop and have a rest?
Jerry is always so busy that he can hardly _________ a few minutes to talk with his child.
---________ it is from our own planet Earth to Mars!--- Yes, it takes months to travel to Mars by spacecraft.
—Jim took ___ one-hour ride just now.What a short time he spent finishing such a long way!—He is ______ experienced rider.
The lady has devoted much of her time ________ South China tigers.A.to protectB.to protecting.C.Protected
I’d like to visit the town ________ we lived while working in that clothes factory. A.which B.when C.where