Question

"Please __________why you're so late," said his girlfriend.

1. A.
   excuse
2. B.
   explain
3. C.
   apologize
4. D.
   tell

Answer 1

B
解析：
 本题是四个动词的辨析。excuse表示“借口”、“原谅”等意思，explain表示“解释”；apologize为不及物动词，后接for。