She didn’t know__________she could express her ideas clearly when she was invited to speak at the meeting.
#55367
A
what
B
why
C
how
D
whether
推荐题目
Li Hua’s shoes are as _______ as Zhang Hui’s. 
#56202
A
cheap
B
cheaper
C
the cheaper
D
The cheapest
________ I’m hungry, _______ I have some food.
#55846
A
Because, so
B
So, because
C
Because, /
D
So, /