In the experiment we kept a watchful eye __________ the development and recorded every detail.
#105015
A
with
B
on
C
for
D
to
推荐题目
At last, we found ourselves at the foot of a hill with trees providing shade and ________ down to eat our picnic lunch.
#105083
A
sitting
B
having sat
C
to sit
D
sat
The past 30 years has ______ the great changes that have taken place in China.
#105211
A
seen
B
noticed
C
watched
D
looked
--- How did you like Nick’s performance last night? --- To be honest, his singing didn’t ___________________ to me much.
#105223
A
appeal
B
belong
C
refer
D
occur
The telephone _____ three times in the last hour, and each time it _____ for my sister.
#105042
A
had rung; was
B
has rung; was
C
rang; has been
D
has been ringing; is
Mr. Brown repeated his words to his son, raising his voice a bit, but still no answer.
#105055
A
received
B
receiving
C
had received
D
to receive