Myfather will have a holiday nextmonth. He’ll take me to Qingdao.

Scientists from different countries are trying to_______ a good way to solve the energy problem.

Why the explosion occurred was____the laboratory attendant had been careless

The old man is ______ weak ______ say any words.

Tom, what’s the matter with you? You look so worn out!–Nothing seriousI ____ my new house all the day and I am afraid I won’t finish until tomorrow afternoon