4. He was too shortsighted to　 ________　 the object.　

3. Did you know that John and Mary have ________　 ?

2. I just want to　 ________　 and see if I can get any gifts to take home.　

1. While listening to the speech,　 please　 ________　 important details.

5. We must make 　　　　(安排) for the meeting.

4. Some language experts make an attempt to 　　　　(使标准化) spelling.

3. The air in the room is not pure.　 Do you have any way to p　　 　it?

2. The old man recovered r　　 　and was soon able to go outside again.

1. I tried to get through, but there were too many people b　　 　my way.

4. 解析：选C。目的是让人们引以为戒并提供建议。