Mary, stop to have a rest. You _________ the flowers in your garden for nearly two hours.
#101159
A
are watering
B
were watering
C
water
D
have been watering
推荐题目
Let’s keep to the point or we ______ any decisions. 
#104991
A
will never reach
B
have never reached
C
never reach
D
never reached
---How can you keep slim as a mother of two sons?---I _______ in the gym for years.
#102426
A
have worked out
B
have been working out
C
have worked on
D
have been working on