It was only after he had read the papers _______ MrGross realized the task before him was extremely difficult to complete

The woman biologist stayed in Africa studying wild animals for 13 years before she returned.—Oh, dear! She _______ a lot of difficulties!

Did you go to the party last night?　　— Yes And I’d rather ________ It was so________

Jack is in good_________ , because he eats ________food.

The lack of eco-friendly habits among the public isthought to be a major _____of global climate change.