---Do you know how long ________? ----I’m sorry I don’t know.
The patients will have to wait all day ______ the doctor works faster.
---What can I do for you?---I want t o buy some _____clothes.
The underlined part in the word “says” is pronounced as ______.
The newly built school canteen(餐厅) is big enough to hold two ________ students at lunch time.
Every year lots of trees ________ to make our country more beautiful.