Group activities will be organized after class _______ children develop team spirit.

Having checked the doors were closed, and ________all the lights were off, the boy opened the door to his bedroom.[ ]

Look! The clock has stopped. May be there is ___with it.

May I borrow these books —Certainly. You can borrow ________ of thetwo books, but you can’t borrow ________.

What the children in the poor mountain village need________textbooks.[ ]