These two maths problems can’t be used in the exam.They are too_________to the students.Everyone can remember the answers.
When you ______ the book please return it to the library on time.
——You look so worn-out!——I lay ________ all the night.
Joe: Why don't you tell me a few things about your country? Ken: __________
With her long beautiful hair gone _______ would be no use for the combs.
The higher the birds flew, _______ we could see them.