Since the time humankind started gardening, we _____to make our environment more beautiful.
#99086
A
try
B
have been trying
C
are trying
D
will try
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---Why, Emily, you look so energetic! ---Well, I ______ in the gym for a slim figure so far.
#101434
A
am working out
B
had been working out
C
worked out
D
have been working out