.It is uncertain whether the medicine will work on the this cold, _________?A. won't it B. isn't it C, will it D. is it
He is leaving for Australia and it will be three years ________ he comes back.
The child was _______ after supper.
Poor _____ it may be, there is no place like home, _____ you may go.
_____ hard she tries, she can hardly avoid making mistakes in her homework.
When you read the book, you' d better make a mark _____ you have any questions.