【推荐1】He has a lot of interests, so he never feels l______ although he lives alone.

【推荐2】He has few friends to talk with, so he often feels l________ and sad.

【推荐3】It’s time to make friends if you feel l________ (孤独的) in your free time.

【推荐1】If the teacher asks you a question, you shouldn’t keep _____ (沉默的).

【推荐2】在下列各句的空白处填入一个适当的词，使句子意思完整、语法正确。
1. Mr. Brown is so strict, so we always do homework ________ to meet his standards.
2. Be ________.Good things come to those who wait.
3. Our P.E. teacher gives us really clear instructions so that we’d be ________ when playing sports.
4. It's hard to separate ________ those whom you have spent so much time with for the past three years.
5. Well, junior high school days are over, we hope to ________ the exam to get into senior high school.

【推荐3】He is fast __________ on the back seat.