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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We won’t start the work until all the preparations __________.
#99078
A
are being made
B
will be made
C
have been made
D
had been made
—Mike, why didn’t you come yesterday? —I __________, but I had an unexpected visitor.
#103200
A
had
B
would
C
did
D
was going to
I_____in London for many years, but I’ve never regretted my final decision to move back to China.
#104049
A
lived
B
was living
C
have lived
D
had lived
When and where to build the new factory ___ ________ yet.
#102038
A
is not decided
B
are not decided
C
has not decided
D
have not decided
I’ll come after the meeting if time ______.
#104198
A
permits
B
is permitting
C
is permitted
D
has permitted