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
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He was so tired that he fell asleep ___he went to bed.
#58470
A
as if
B
even though
C
ever since
D
as soon as
–What is your sister going to be ________ she grows up?–She is going to be an engineer.
#56613
A
before
B
although
C
when
D
unless