If it was not an accident, he must have done it _____ .
I'm so glad you've come here to______ this matter in person.
Thanks to the policy of reducing load of study, the students can study in a relaxing way and _____a great deal from it.
Many people agree that the electronic newspaper is a _____as great as the invention of printing, which will change our whole way of life.
Anyway, we shouldn't the law of nature and overuse the limited resources; otherwise, we will have to pay the price for it.
He struggled his path of knowledge, so he _____to enter university: