Scientists say it may be five or six years ____ it is possible to test this medicine on human patients.
the green valley, we thought we had reached the land.
Mum my suggestion while Dad spoke my idea.
The way he did it was different we were used to.
the problem of land erosion getting more serious, the local government is searching for a way to deal with it.
--- Good evening, Mr. Green. I’m sorry to bother you. But it’s fourth of December. --- Oh, Mrs Baxter, rent! I’m sorry it’s late. I’ll write you check right now.