At the age of nearly seventy, he set off ________ a -mile journey ________ a bicycle
You’d better not phone me tomorrow evening; I ____ an important meeting then.
_____around the Water Cube, we were then taken to see the Bird’s Nest .
—Go and have great fun! I will cope with _____ you leave to me properly. —Thanks a lot.
-France , a cab to school in such thundering weather. —I will, Mom.
Scientists say it may be five or six years _____ it is possible to test this medicine on human patients.