While dancing happily at home,_______________ ．
#68478
A
the door bell rang
B
the door bell rings
C
we heard the door bell rings
D
we heard the door bell ring
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She is a woman of great knowledge, _______ much can be learned.
#68758
A
in whom
B
about whom
C
of whom
D
from whom
________, it began to rain unexpectedly.
#68281
A
While cleaning the machine
B
To clean the machine
C
He was cleaning the machine
D
While he was cleaning the machine
I would rather send my daughter to a dancing class, _______ my husband prefers her to learn piano first.
#66971
A
when
B
while
C
although
D
however
Although the play had already been on for 10 minutes, I was still unable to find a seat ___________.
#69603
A
to sit
B
for sit on
C
to sit on
D
for sitting
Peter has many friends;_________can help him.
#73402
A
few of which
B
few of whom
C
few of that
D
few of them