The little boy is dirty from head to foot because he in the mud all morning. A.

The little boy is dirty from head to foot because he_____in the mud all morning.

　 A. has played 　 B. is playing

　 C. has been playing 　 D. was playing

试题答案

C

从is dirty from head to foot和all morning判断应用C表示一直在玩。