--- What do you think of my suggestion? --- I’m sorry. Er… I _______ about something else.         
#102857
A
thought
B
am thinking
C
was thinking
D
had thought
推荐题目
-----What _____?-----I______my key and can't open the door. 
#104186
A
happened, lost
B
has happened, lost
C
happens, have lost
D
has happened, have lost
 The troops _______ themselves to go into battle.
#100152
A
prepared
B
were prepared
C
to prepare
D
preparing