[问答题]Itinvolve a willingness to stay with each other in times of pain, struggle, and despair, as well as in times of calm and enjoyment.A. do__C. didD. done这种承诺意味着不论在恬适欢乐时，还是在艰难困苦、失意绝望时，都愿意厮守相伴
[问答题]用所给单词的适当形式完成句子。 . I need to do my homework more __ (care). 2. You should eat it __ (little) often. 3. He (give) up junk food. 4. __ (do) exercise is good for everyone. 5. Try __(not sleep) late at night.