Mr. Smith is busy these days ________ a new book on how to develop a child’s reading skill.
We__________dinner at seven o’clock when CCTV__________to broadcast news.
Let me tell you what to do next__________I forget.
Because farmland__________quickly,the government are considering starting a program to solve the problem.
—Hurry,Mary! You__________on the phone. —Oh,I__________.Thank you,Mom.
—Jack and David are brothers. —Oh,I__________why they looked so alike.