—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
The mother is very glad; her baby is beginning ______.
#97543
A
understanding what she means
B
to understand that she meant
C
to understand what she means
D
noticing what she means ,
We don’t allow____here,but we can allow you ____in the next room.
#96761
A
smoking,smoke
B
smoke,smoking
C
smoking,to smoke
D
smoke,to smoke