They were busy ________ an experiment when I came.
#92445
A
doing
B
to be doing
C
with doing
D
to do
推荐题目
Take scary rides in the park and you will know what it feels like _____ through the air and take off in a rocket.
#92774
A
falling
B
to fall
C
having fallen
D
when falling
According to the artists，the painting _______ to go for at least a million dollars.
#92695
A
expects
B
is expecting
C
will expect
D
is expected
On August 12,2009, Typhoon Morakot swept across Taiwan island, _____ a lot of villages _____.
#93662
A
leaving; damaged.
B
left; damaged.
C
left; damaging.
D
leaving; damaging.
Fortunately, the illness is fully treatable if _____ within ten days.
#96907
A
being found
B
find
C
to be found
D
found