I was out of town at the time，so I don’t know exactly how it ________.
#99406
A
was happening
B
happened
C
happens
D
has happened
推荐题目
—— We didn’t find Smith attending the lecture.—— No one ____ him about _____ a lecture the following day.
#102893
A
told ；there to be
B
had told ; there to be
C
told; there was
D
had told ; there being
.—Do you like the material? —Yes, it ______ very soft. (MET1994 )
#104332
A
isfeeling
B
felt
C
feels
D
isfelt
Traffic conditions in Beijing ________ for decades. At first people only complained about jams during rush hours，but today every hour is rush hour.
#101468
A
is worsening
B
have worsened
C
have been worsening
D
worsened
（2010·重庆模拟）—Alice, you look puzzled．Haven’t you understood it? —Yes．I _____of another problem just now．
#102848
A
had thought
B
have thought
C
thought
D
was thinking