—Have you been to the Great Wall?—Perhaps not in my memory. ________, it might have been during my early childhood.
The children ______ very quiet; I wonder what they ____up to.
Jim talked for about half an hour yesterday.Never_____ him talk so much.
——_____ Betty this morning? —— Not yet, but she is sure to be here before noon.
—— Are you a visitor here? —— That’s right.I___round the world and now my dream of coming to China___true.
All but one____take part in the conference____tomorrow.