_____the problem of land erosion getting more serious, the government is searching for a way to deal with it.
— Can Lihua help me with my English? — I regret to tell you her English is_______ yours.
This book is said to be a special one, which ________many events not found on other history books.
.Last summer holiday, I went back to my hometown, ________ the neighbours and the house ________ I used to be familiar with were gone.
You'll ________ in hospital if you drive so fast.
Yesterday morning he got up earlier than________ , for it was not a(n)________day.