... C D 55 . I spend most of my free time to read books. A B C D 56 . They had played cards since 9 o’clock this morning. A B C D 57 . It’s time you begin to study seriously. A B C D 58 . We ... physical benefits when it (63 ) __________ hiking to, from, and around the campsite, and many people believe that camping (64 ) __________ youngsters feel more ( 65 ) ___________. 61 . A. in which B. ... campsites. A B C D 52 . You would better be careful not to miss the train. A B C D 53 . The children are so exciting about the field trip tomorrow that they can’t sleep. A B C D 54 . We all prefer...