—How about your travel? —You can hardly imagine what difficulty we have had ______ the vast desert. 
#95344
A
explored
B
exploring
C
to explore
D
explore
推荐题目
We are invited to a party _________in our club next Friday. 
#98964
A
to be held
B
held
C
being held
D
holding
The sun began to rise in the sky, ________ the mountain in golden light.
#90731
A
bathed
B
bathing
C
to bathe
D
have bathed
He felt his chair ___ at the time of earthquake.
#98786
A
moved
B
to move
C
is moving
D
moving