单选题 He took great pains to () the company well

单选题 The () of science makes our life more and more convenient

单选题 He _ in three days

单选题 Garduates are finding it more and more difficult to find()

单选题 Charlie _ here next month

单选题 There _ a meeting tomorrow afternoon

单选题 They are () closely in the planning of the project

单选题 It was a remarkable () for such a young player