lookout的意思等小问题1.lookout的意思,最好能给几

1.Look out的意思有:
a. 向外看 Look out! A girl is there.
b.小心    Look out!There comes a bus.
c. 找出  I'll look out some of my old books for you to read.
2. 第二道题目  receive 指客观上收到,而accept 指主观上愿意接受.在这到题目里,如果第一个空格填had received,则表示receive 这个动作发生在accept 之前,但按照这句话的意思:虽然收到了礼物,但我却不想接受它,不强调动作的先后性,只陈述过去发生的事情.
3. How often does your friend say he will stay here.