When he looked up, he suddenly found himself       by a group of teenagers,       looked at him anxiously.
#103267
A
to be surrounded; which
B
surrounded; who
C
be surrounded; who
D
having been surrounded; which
推荐题目
If Newton lived today, he would be surprised by what _______ in science and technology.
#103519
A
had discovered
B
had been discovered
C
has discovered
D
has been discovered
---- I’ll be able to come to see your performance at 8:30 tomorrow evening.---I’m sorry, by then my performance____ and I___ reporters in the meeting room.
#104969
A
will be ended; will meet
B
is to end; will meet
C
will have ended; will be meeting
D
will be ended; am going to meet
Experiments of this kind ___in both the U.S and Europe well before the Second World War.
#100251
A
had conducted
B
have conducted
C
have been conducted
D
had been conducted