While typing, Helen has a habit of stopping ______ to give her long and flowing hair a smooth.A now and then B.over and over C.up and down D.here and there
---May I borrow your book Steve Jobs ? --- ________ you return it before Friday.
---Shall I give you a ride since you live so far away? ---Thank you. ____.
E-mail, as well as telephones, _______an important part in our daily communication.
If you make every effort, your dream will ____, and this ____ all the people.
Had Tom studied harder, he ________ the exam.