—Allan looks tired out.  —Sure. He      in the gym for two hours. 
#102106
A
works out
B
had worked out
C
has been working out
D
was working out
推荐题目
Hurry up! Flight 4406        off at 18:40.
#101551
A
takes
B
took
C
will be taken
D
has taken
Remember me to your parents when you _____ them.
#99270
A
are calling
B
call
C
will call
D
have called