______ a phone is of great help, I don’t think it’s a good idea to spend too much time on it.
—Shall I pick you up after school this afternoon? — ________, if it’s convenient to you.
The purpose of a class is to teach you to think creatively and not to follow your teacher_________.
With lots of problems ________ in the class, our teacher looks very relaxed and happy.
—Sometimes I am even sleepy in class. —It’s terrible. You _____ as well go to bed earlier.
The problem lies in______ we’re now giving him a fish, not teaching him how to fish.