I could have turned to Mr. Smith for help, but he ______ too busy then.
#104216
A
is
B
was
C
should be
D
has been
推荐题目
Last week I took the Civil Service Admission Examination, for which I _____ for nearly three months.
#102168
A
had prepared
B
would prepare
C
was preparing
D
have been preparing
You ____ television.Why not do something more active?
#102877
A
always watch
B
are always watching
C
have always watched
D
have always been watching
Would you give him my best regards as soon as he ____?
#103968
A
came
B
come
C
has come
D
comes