【題目】As a mother of two young boys, she knows the difficulties of keeping kids ________.

【題目】At the beginning of the class, the teacher said to us, “Open your books and ________page 64, please.”

【題目】Let’s ______my scientific knowledge and your business skills and start a company.

【題目】—It seems that Ann doesn't like the bag you bought for her the other day.

【題目】What shall we use for power when all the oil in the world has________.

【題目】These comments are not directly________ to the inquiry about safety standards.

【題目】With many cities in China dreadfully blanketed by thick haze, the environmental problem is _____ Chinese people concern most nowadays.

【題目】Making money seems like a problem that’s very far away from us children, _____only the parents need to care about.

【題目】There is no need to __________ the fact that it was you that donated the 100 yuan.

【題目】One day we will manage to _____the world ______this terrible disease.