挑战习题
1/5单选题
难度:

1.

Mary has a bad cold. She has to stay in _________ bed.


A

a

B

/

C

the

D

an

提示1:
PHA+5Zu65a6a5pCt6YWN77yM5Y2n55eF5Zyo5bqK44CB5Zyo5bqK5LyR5oGv44CCPC9wPg==
正确答案:Qg==
PHA+5Y2n55eF5Zyo5bqK44CB5Zyo5bqK5LyR5oGv77yMc3RheSBpbiBiZWTkuI3nlKjliqDlhqDor43jgII8L3A+