The volunteers sent _______ books to a mountain village school on Children’s Day.

Mr. Zhou, _____ the Iphone belong to Alice?-I’m afraid not. It may be John’s, but I’m not sure.

Researchers have found clear and convincing evidence ________ happiness isthe key to better health and longer lives.

Henry will give us a report as soon as he _______.

The oral test counts 20 % _____ the final English exam.[ ]